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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Avoid using sk_socket after free when sending\n\nThe sk-\u003esk_socket is not locked or referenced in backlog thread, and\nduring the call to skb_send_sock(), there is a race condition with\nthe release of sk_socket. All types of sockets(tcp/udp/unix/vsock)\nwill be affected.\n\nRace conditions:\n\u0027\u0027\u0027\nCPU0                               CPU1\n\nbacklog::skb_send_sock\n  sendmsg_unlocked\n    sock_sendmsg\n      sock_sendmsg_nosec\n                                   close(fd):\n                                     ...\n                                     ops-\u003erelease() -\u003e sock_map_close()\n                                     sk_socket-\u003eops = NULL\n                                     free(socket)\n      sock-\u003eops-\u003esendmsg\n            ^\n            panic here\n\u0027\u0027\u0027\n\nThe ref of psock become 0 after sock_map_close() executed.\n\u0027\u0027\u0027\nvoid sock_map_close()\n{\n    ...\n    if (likely(psock)) {\n    ...\n    // !! here we remove psock and the ref of psock become 0\n    sock_map_remove_links(sk, psock)\n    psock = sk_psock_get(sk);\n    if (unlikely(!psock))\n        goto no_psock; \u003c=== Control jumps here via goto\n        ...\n        cancel_delayed_work_sync(\u0026psock-\u003ework); \u003c=== not executed\n        sk_psock_put(sk, psock);\n        ...\n}\n\u0027\u0027\u0027\n\nBased on the fact that we already wait for the workqueue to finish in\nsock_map_close() if psock is held, we simply increase the psock\nreference count to avoid race conditions.\n\nWith this patch, if the backlog thread is running, sock_map_close() will\nwait for the backlog thread to complete and cancel all pending work.\n\nIf no backlog running, any pending work that hasn\u0027t started by then will\nfail when invoked by sk_psock_get(), as the psock reference count have\nbeen zeroed, and sk_psock_drop() will cancel all jobs via\ncancel_delayed_work_sync().\n\nIn summary, we require synchronization to coordinate the backlog thread\nand close() thread.\n\nThe panic I catched:\n\u0027\u0027\u0027\nWorkqueue: events sk_psock_backlog\nRIP: 0010:sock_sendmsg+0x21d/0x440\nRAX: 0000000000000000 RBX: ffffc9000521fad8 RCX: 0000000000000001\n...\nCall Trace:\n \u003cTASK\u003e\n ? die_addr+0x40/0xa0\n ? exc_general_protection+0x14c/0x230\n ? asm_exc_general_protection+0x26/0x30\n ? sock_sendmsg+0x21d/0x440\n ? sock_sendmsg+0x3e0/0x440\n ? __pfx_sock_sendmsg+0x10/0x10\n __skb_send_sock+0x543/0xb70\n sk_psock_backlog+0x247/0xb80\n...\n\u0027\u0027\u0027"
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              "value": "AV:L - The race is closed by a local `close(fd)` on a sockmap-enrolled socket concurrent with the BPF backlog worker; while remote peer data drives the backlog side, the attacker must be local to control the socket lifetime. BPF/sockmap is Local per kernel scoring guidance.\nAC:L - The attacker controls both sides of the race \u2014 it generates the redirected traffic that schedules `sk_psock_backlog()` and picks the `close()` timing \u2014 and can repeat the attempt in a tight loop until it wins. No condition outside its influence is required.\nPR:L - An unprivileged local process suffices in the real deployments of this feature (Cilium/Istio sockops redirect, BPF-token-delegated containers), where a privileged agent enrols workload sockets into the sockmap and the attacker only needs to send/redirect data and close its own fd.\nUI:N - No victim action is needed; the attacker drives both the traffic and the close from its own process.\nS:U - The use-after-free and any resulting corruption remain within the kernel\u0027s own security authority, with no VM, IOMMU, or sandbox boundary crossed.\nC:H - Use-after-free on `struct socket` \u2014 the freed object can be resprayed from `sock_inode_cachep`, causing redirected payload to be transmitted through a stale/attacker-influenced socket and permitting kernel memory disclosure.\nI:H - `security_socket_sendmsg()` and `READ_ONCE(sock-\u003eops)-\u003esendmsg` dereference and indirect-call through a pointer loaded from freed memory, giving a control-flow hijack primitive once the freed `struct socket` is reclaimed with attacker-groomed contents.\nA:H - The maintainer reproduced a general-protection fault in `sock_sendmsg()` from the `sk_psock_backlog` workqueue; the NULLed `sock-\u003eops` alone guarantees a fatal kernel oops in worker context."
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38154",
    "datePublished": "2025-07-03T08:35:57.188Z",
    "dateReserved": "2025-04-16T04:51:23.990Z",
    "dateUpdated": "2026-08-05T11:59:54.410Z",
    "state": "PUBLISHED"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm: move tcpm_queue_vdm_unlocked to asynchronous work\n\nA state check was previously added to tcpm_queue_vdm_unlocked to\nprevent a deadlock where the DisplayPort Alt Mode driver would be\nexecuting work and attempting to grab the tcpm_lock while the TCPM\nwas holding the lock and attempting to unregister the altmode, blocking\non the altmode driver\u0027s cancel_work_sync call.\n\nBecause the state check isn\u0027t protected, there is a small window\nwhere the Alt Mode driver could determine that the TCPM is\nin a ready state and attempt to grab the lock while the\nTCPM grabs the lock and changes the TCPM state to one that\ncauses the deadlock. The callstack is provided below:\n\n[110121.667392][    C7] Call trace:\n[110121.667396][    C7]  __switch_to+0x174/0x338\n[110121.667406][    C7]  __schedule+0x608/0x9f0\n[110121.667414][    C7]  schedule+0x7c/0xe8\n[110121.667423][    C7]  kernfs_drain+0xb0/0x114\n[110121.667431][    C7]  __kernfs_remove+0x16c/0x20c\n[110121.667436][    C7]  kernfs_remove_by_name_ns+0x74/0xe8\n[110121.667442][    C7]  sysfs_remove_group+0x84/0xe8\n[110121.667450][    C7]  sysfs_remove_groups+0x34/0x58\n[110121.667458][    C7]  device_remove_groups+0x10/0x20\n[110121.667464][    C7]  device_release_driver_internal+0x164/0x2e4\n[110121.667475][    C7]  device_release_driver+0x18/0x28\n[110121.667484][    C7]  bus_remove_device+0xec/0x118\n[110121.667491][    C7]  device_del+0x1e8/0x4ac\n[110121.667498][    C7]  device_unregister+0x18/0x38\n[110121.667504][    C7]  typec_unregister_altmode+0x30/0x44\n[110121.667515][    C7]  tcpm_reset_port+0xac/0x370\n[110121.667523][    C7]  tcpm_snk_detach+0x84/0xb8\n[110121.667529][    C7]  run_state_machine+0x4c0/0x1b68\n[110121.667536][    C7]  tcpm_state_machine_work+0x94/0xe4\n[110121.667544][    C7]  kthread_worker_fn+0x10c/0x244\n[110121.667552][    C7]  kthread+0x104/0x1d4\n[110121.667557][    C7]  ret_from_fork+0x10/0x20\n\n[110121.667689][    C7] Workqueue: events dp_altmode_work\n[110121.667697][    C7] Call trace:\n[110121.667701][    C7]  __switch_to+0x174/0x338\n[110121.667710][    C7]  __schedule+0x608/0x9f0\n[110121.667717][    C7]  schedule+0x7c/0xe8\n[110121.667725][    C7]  schedule_preempt_disabled+0x24/0x40\n[110121.667733][    C7]  __mutex_lock+0x408/0xdac\n[110121.667741][    C7]  __mutex_lock_slowpath+0x14/0x24\n[110121.667748][    C7]  mutex_lock+0x40/0xec\n[110121.667757][    C7]  tcpm_altmode_enter+0x78/0xb4\n[110121.667764][    C7]  typec_altmode_enter+0xdc/0x10c\n[110121.667769][    C7]  dp_altmode_work+0x68/0x164\n[110121.667775][    C7]  process_one_work+0x1e4/0x43c\n[110121.667783][    C7]  worker_thread+0x25c/0x430\n[110121.667789][    C7]  kthread+0x104/0x1d4\n[110121.667794][    C7]  ret_from_fork+0x10/0x20\n\nChange tcpm_queue_vdm_unlocked to queue for tcpm_queue_vdm_work,\nwhich can perform the state check while holding the TCPM lock\nwhile the Alt Mode lock is no longer held. This requires a new\nstruct to hold the vdm data, altmode_vdm_event."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: fix ktls panic with sockmap\n\n[ 2172.936997] ------------[ cut here ]------------\n[ 2172.936999] kernel BUG at lib/iov_iter.c:629!\n......\n[ 2172.944996] PKRU: 55555554\n[ 2172.945155] Call Trace:\n[ 2172.945299]  \u003cTASK\u003e\n[ 2172.945428]  ? die+0x36/0x90\n[ 2172.945601]  ? do_trap+0xdd/0x100\n[ 2172.945795]  ? iov_iter_revert+0x178/0x180\n[ 2172.946031]  ? iov_iter_revert+0x178/0x180\n[ 2172.946267]  ? do_error_trap+0x7d/0x110\n[ 2172.946499]  ? iov_iter_revert+0x178/0x180\n[ 2172.946736]  ? exc_invalid_op+0x50/0x70\n[ 2172.946961]  ? iov_iter_revert+0x178/0x180\n[ 2172.947197]  ? asm_exc_invalid_op+0x1a/0x20\n[ 2172.947446]  ? iov_iter_revert+0x178/0x180\n[ 2172.947683]  ? iov_iter_revert+0x5c/0x180\n[ 2172.947913]  tls_sw_sendmsg_locked.isra.0+0x794/0x840\n[ 2172.948206]  tls_sw_sendmsg+0x52/0x80\n[ 2172.948420]  ? inet_sendmsg+0x1f/0x70\n[ 2172.948634]  __sys_sendto+0x1cd/0x200\n[ 2172.948848]  ? find_held_lock+0x2b/0x80\n[ 2172.949072]  ? syscall_trace_enter+0x140/0x270\n[ 2172.949330]  ? __lock_release.isra.0+0x5e/0x170\n[ 2172.949595]  ? find_held_lock+0x2b/0x80\n[ 2172.949817]  ? syscall_trace_enter+0x140/0x270\n[ 2172.950211]  ? lockdep_hardirqs_on_prepare+0xda/0x190\n[ 2172.950632]  ? ktime_get_coarse_real_ts64+0xc2/0xd0\n[ 2172.951036]  __x64_sys_sendto+0x24/0x30\n[ 2172.951382]  do_syscall_64+0x90/0x170\n......\n\nAfter calling bpf_exec_tx_verdict(), the size of msg_pl-\u003esg may increase,\ne.g., when the BPF program executes bpf_msg_push_data().\n\nIf the BPF program sets cork_bytes and sg.size is smaller than cork_bytes,\nit will return -ENOSPC and attempt to roll back to the non-zero copy\nlogic. However, during rollback, msg-\u003emsg_iter is reset, but since\nmsg_pl-\u003esg.size has been increased, subsequent executions will exceed the\nactual size of msg_iter.\n\u0027\u0027\u0027\niov_iter_revert(\u0026msg-\u003emsg_iter, msg_pl-\u003esg.size - orig_size);\n\u0027\u0027\u0027\n\nThe changes in this commit are based on the following considerations:\n\n1. When cork_bytes is set, rolling back to non-zero copy logic is\npointless and can directly go to zero-copy logic.\n\n2. We can not calculate the correct number of bytes to revert msg_iter.\n\nAssume the original data is \"abcdefgh\" (8 bytes), and after 3 pushes\nby the BPF program, it becomes 11-byte data: \"abc?de?fgh?\".\nThen, we set cork_bytes to 6, which means the first 6 bytes have been\nprocessed, and the remaining 5 bytes \"?fgh?\" will be cached until the\nlength meets the cork_bytes requirement.\n\nHowever, some data in \"?fgh?\" is not within \u0027sg-\u003emsg_iter\u0027\n(but in msg_pl instead), especially the data \"?\" we pushed.\n\nSo it doesn\u0027t seem as simple as just reverting through an offset of\nmsg_iter.\n\n3. For non-TLS sockets in tcp_bpf_sendmsg, when a \"cork\" situation occurs,\nthe user-space send() doesn\u0027t return an error, and the returned length is\nthe same as the input length parameter, even if some data is cached.\n\nAdditionally, I saw that the current non-zero-copy logic for handling\ncorking is written as:\n\u0027\u0027\u0027\nline 1177\nelse if (ret != -EAGAIN) {\n\tif (ret == -ENOSPC)\n\t\tret = 0;\n\tgoto send_end;\n\u0027\u0027\u0027\n\nSo it\u0027s ok to just return \u0027copied\u0027 without error when a \"cork\" situation\noccurs."
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              "value": "AV:L - The trigger is a local `sendmsg()`/`sendto()` syscall on a kTLS socket enrolled in a sockmap, and the data driving the bug is the calling process\u0027s own send buffer plus the sk_msg BPF verdict \u2014 not data received from a remote peer. This is the kTLS transmit path combined with BPF/sockmap, both of which are locally reachable only.\nAC:L - Exploitation is fully deterministic \u2014 no race, no memory-layout grooming, no timing window; the attacker simply issues a `send()` whose length falls below the program\u0027s `cork_bytes` threshold and the `BUG()` fires every time. The attacker additionally chooses ITER_UBUF vs ITER_IOVEC by controlling `nr_segs`, selecting between the guaranteed panic and the out-of-bounds iterator walk.\nPR:L - Enabling kTLS TX requires no capability whatsoever (net/tls contains no `capable()` checks), and in the standard sockmap deployment the `sk_msg` program is installed by the platform/service mesh with sockets auto-enrolled on connect, so an ordinary unprivileged local user needs only a socket and a `send()` call. Where the attacker supplies the BPF program, `bpf_token_capable()` also grants `CAP_BPF`/`CAP_NET_ADMIN` inside a user namespace via a delegated BPF token.\nUI:N - The attacker performs every step themselves \u2014 create socket, enable kTLS, call send(). No action by any other user or administrator is needed at exploitation time.\nS:U - The corruption and the crash are confined to the kernel\u0027s own memory and the attacking task\u0027s socket state; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - With \u22652 iovecs, `iov_iter_revert()` walks backwards off the front of `iovstack[]` in an unbounded loop, reading kernel-stack qwords as `iov_len` and leaving `i-\u003e__iov` pointing at out-of-bounds kernel memory adjacent to the attacker-seeded `sockaddr_storage`; `i-\u003ecount` is simultaneously inflated past the end of the user buffer, and the corrupted iterator is then used for further copies. This unbounded OOB kernel read plus live-iterator corruption is a disclosure primitive.\nI:H - The faulty revert writes an out-of-bounds pointer, inflated `nr_segs`, and an `iov_offset` derived from out-of-bounds kernel memory into a live kernel iterator whose neighbouring stack contents the attacker controls via `msg_name`, and the `sg.size`/`sk_mem_charge` accounting diverges from reality. Memory-safety corruption of this nature is scored High.\nA:H - The common single-buffer case hits a guaranteed `BUG()` at lib/iov_iter.c:629 while holding both `tls_ctx-\u003etx_lock` and the socket lock, so the killed task self-deadlocks in `tls_sk_proto_close()` during exit \u2014 an unkillable D-state task with a permanently wedged socket and leaked memory. On systems with `panic_on_oops` it is an immediate full system panic, and it is trivially repeatable."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: bnxt: fix truesize for mb-xdp-pass case\n\nWhen mb-xdp is set and return is XDP_PASS, packet is converted from\nxdp_buff to sk_buff with xdp_update_skb_shared_info() in\nbnxt_xdp_build_skb().\nbnxt_xdp_build_skb() passes incorrect truesize argument to\nxdp_update_skb_shared_info().\nThe truesize is calculated as BNXT_RX_PAGE_SIZE * sinfo-\u003enr_frags but\nthe skb_shared_info was wiped by napi_build_skb() before.\nSo it stores sinfo-\u003enr_frags before bnxt_xdp_build_skb() and use it\ninstead of getting skb_shared_info from xdp_get_shared_info_from_buff().\n\nSplat looks like:\n ------------[ cut here ]------------\n WARNING: CPU: 2 PID: 0 at net/core/skbuff.c:6072 skb_try_coalesce+0x504/0x590\n Modules linked in: xt_nat xt_tcpudp veth af_packet xt_conntrack nft_chain_nat xt_MASQUERADE nf_conntrack_netlink xfrm_user xt_addrtype nft_coms\n CPU: 2 UID: 0 PID: 0 Comm: swapper/2 Not tainted 6.14.0-rc2+ #3\n RIP: 0010:skb_try_coalesce+0x504/0x590\n Code: 4b fd ff ff 49 8b 34 24 40 80 e6 40 0f 84 3d fd ff ff 49 8b 74 24 48 40 f6 c6 01 0f 84 2e fd ff ff 48 8d 4e ff e9 25 fd ff ff \u003c0f\u003e 0b e99\n RSP: 0018:ffffb62c4120caa8 EFLAGS: 00010287\n RAX: 0000000000000003 RBX: ffffb62c4120cb14 RCX: 0000000000000ec0\n RDX: 0000000000001000 RSI: ffffa06e5d7dc000 RDI: 0000000000000003\n RBP: ffffa06e5d7ddec0 R08: ffffa06e6120a800 R09: ffffa06e7a119900\n R10: 0000000000002310 R11: ffffa06e5d7dcec0 R12: ffffe4360575f740\n R13: ffffe43600000000 R14: 0000000000000002 R15: 0000000000000002\n FS:  0000000000000000(0000) GS:ffffa0755f700000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007f147b76b0f8 CR3: 00000001615d4000 CR4: 00000000007506f0\n PKRU: 55555554\n Call Trace:\n  \u003cIRQ\u003e\n  ? __warn+0x84/0x130\n  ? skb_try_coalesce+0x504/0x590\n  ? report_bug+0x18a/0x1a0\n  ? handle_bug+0x53/0x90\n  ? exc_invalid_op+0x14/0x70\n  ? asm_exc_invalid_op+0x16/0x20\n  ? skb_try_coalesce+0x504/0x590\n  inet_frag_reasm_finish+0x11f/0x2e0\n  ip_defrag+0x37a/0x900\n  ip_local_deliver+0x51/0x120\n  ip_sublist_rcv_finish+0x64/0x70\n  ip_sublist_rcv+0x179/0x210\n  ip_list_rcv+0xf9/0x130\n\nHow to reproduce:\n\u003cNode A\u003e\nip link set $interface1 xdp obj xdp_pass.o\nip link set $interface1 mtu 9000 up\nip a a 10.0.0.1/24 dev $interface1\n\u003cNode B\u003e\nip link set $interfac2 mtu 9000 up\nip a a 10.0.0.2/24 dev $interface2\nping 10.0.0.1 -s 65000\n\nFollowing ping.py patch adds xdp-mb-pass case. so ping.py is going to be\nable to reproduce this issue."
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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              "value": "AV:N - The bug is triggered entirely by an inbound Ethernet frame processed in the bnxt_en NAPI receive path (bnxt_rx_pkt \u2192 bnxt_xdp_build_skb), with the splat landing in ip_defrag()/skb_try_coalesce(); no local access to the target is required. Jumbo/multi-buffer frames are routable end-to-end inside jumbo-enabled datacenter and cloud VPC fabrics, so the sender need not share the victim\u0027s L2 segment.\nAC:L - On an affected host (Broadcom NetXtreme NIC, jumbo MTU, multi-buffer XDP program returning XDP_PASS) every oversized packet deterministically produces the wrong truesize \u2014 the upstream reproducer is a single `ping -s 65000`. There is no race to win and no memory-layout condition outside the attacker\u0027s control.\nPR:N - The vulnerable code executes in softirq/NAPI context on raw received frames, long before any socket lookup, authentication, or capability check. An unauthenticated attacker with no account on the target simply emits packets.\nUI:N - No victim action is needed at attack time; the XDP program and jumbo MTU are pre-existing deployment configuration, not interaction solicited from a user. Packet arrival alone drives the entire path.\nS:U - The miscounted truesize corrupts skb and socket memory accounting within the same kernel security authority that owns the RX path. No VM, container, or IOMMU boundary is crossed.\nC:N - Only the truesize accounting field is wrong; skb-\u003efrags[] and xdp_frags_size retain their correct values, so no out-of-bounds or uninitialized memory is read or exposed to userspace. Nothing is disclosed to the attacker.\nI:N - There is no out-of-bounds write, type confusion, or control-flow corruption \u2014 the erroneous value only skews internal memory-accounting counters, whose consequence is availability rather than data modification.\nA:H - The under-counted truesize trips WARN_ON_ONCE(delta \u003c len) in skb_try_coalesce() during IP reassembly, which is an immediate kernel panic on the panic_on_warn configurations common in cloud and hardened fleets. Even without panic_on_warn, sk_rmem_alloc/sk_forward_alloc and the IP-defrag memory limit are under-charged by roughly the frag count, letting a remote flood pin several times the configured buffer memory and drive the system to OOM."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: Fix null-ptr-deref in jfs_ioc_trim\n\n[ Syzkaller Report ]\n\nOops: general protection fault, probably for non-canonical address\n0xdffffc0000000087: 0000 [#1\nKASAN: null-ptr-deref in range [0x0000000000000438-0x000000000000043f]\nCPU: 2 UID: 0 PID: 10614 Comm: syz-executor.0 Not tainted\n6.13.0-rc6-gfbfd64d25c7a-dirty #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nSched_ext: serialise (enabled+all), task: runnable_at=-30ms\nRIP: 0010:jfs_ioc_trim+0x34b/0x8f0\nCode: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93\n90 82 fe ff 4c 89 ff 31 f6\nRSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206\nRAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a\nRDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001\nRBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000\nR10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000\nR13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438\nFS:  00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\u003cTASK\u003e\n? __die_body+0x61/0xb0\n? die_addr+0xb1/0xe0\n? exc_general_protection+0x333/0x510\n? asm_exc_general_protection+0x26/0x30\n? jfs_ioc_trim+0x34b/0x8f0\njfs_ioctl+0x3c8/0x4f0\n? __pfx_jfs_ioctl+0x10/0x10\n? __pfx_jfs_ioctl+0x10/0x10\n__se_sys_ioctl+0x269/0x350\n? __pfx___se_sys_ioctl+0x10/0x10\n? do_syscall_64+0xfb/0x210\ndo_syscall_64+0xee/0x210\n? syscall_exit_to_user_mode+0x1e0/0x330\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fe51f4903ad\nCode: c3 e8 a7 2b 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 89 f8 48\n89 f7 48 89 d6 48 89 ca 4d\nRSP: 002b:00007fe5202250c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 00007fe51f5cbf80 RCX: 00007fe51f4903ad\nRDX: 0000000020000680 RSI: 00000000c0185879 RDI: 0000000000000005\nRBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fe520225640\nR13: 000000000000000e R14: 00007fe51f44fca0 R15: 00007fe52021d000\n\u003c/TASK\u003e\nModules linked in:\n---[ end trace 0000000000000000 ]---\nRIP: 0010:jfs_ioc_trim+0x34b/0x8f0\nCode: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93\n90 82 fe ff 4c 89 ff 31 f6\nRSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206\nRAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a\nRDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001\nRBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000\nR10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000\nR13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438\nFS:  00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nKernel panic - not syncing: Fatal exception\n\n[ Analysis ]\n\nWe believe that we have found a concurrency bug in the `fs/jfs` module\nthat results in a null pointer dereference. There is a closely related\nissue which has been fixed:\n\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234\n\n... but, unfortunately, the accepted patch appears to still be\nsusceptible to a null pointer dereference under some interleavings.\n\nTo trigger the bug, we think that `JFS_SBI(ipbmap-\u003ei_sb)-\u003ebmap` is set\nto NULL in `dbFreeBits` and then dereferenced in `jfs_ioc_trim`. This\nbug manifests quite rarely under normal circumstances, but is\ntriggereable from a syz-program."
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix sample vs do_exit()\n\nBaisheng Gao reported an ARM64 crash, which Mark decoded as being a\nsynchronous external abort -- most likely due to trying to access\nMMIO in bad ways.\n\nThe crash further shows perf trying to do a user stack sample while in\nexit_mmap()\u0027s tlb_finish_mmu() -- i.e. while tearing down the address\nspace it is trying to access.\n\nIt turns out that we stop perf after we tear down the userspace mm; a\nreceipie for disaster, since perf likes to access userspace for\nvarious reasons.\n\nFlip this order by moving up where we stop perf in do_exit().\n\nAdditionally, harden PERF_SAMPLE_CALLCHAIN and PERF_SAMPLE_STACK_USER\nto abort when the current task does not have an mm (exit_mm() makes\nsure to set current-\u003emm = NULL; before commencing with the actual\nteardown). Such that CPU wide events don\u0027t trip on this same problem."
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          "url": "https://git.kernel.org/stable/c/507c9a595bad3abd107c6a8857d7fd125d89f386"
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        },
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          "url": "https://git.kernel.org/stable/c/975ffddfa2e19823c719459d2364fcaa17673964"
        },
        {
          "url": "https://git.kernel.org/stable/c/2ee6044a693735396bb47eeaba1ac3ae26c1c99b"
        },
        {
          "url": "https://git.kernel.org/stable/c/456019adaa2f5366b89c868dea9b483179bece54"
        },
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          "url": "https://git.kernel.org/stable/c/7311970d07c4606362081250da95f2c7901fc0db"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f6fc782128355931527cefe3eb45338abd8ab39"
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      "title": "perf: Fix sample vs do_exit()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38424",
    "datePublished": "2025-07-25T14:16:44.846Z",
    "dateReserved": "2025-04-16T04:51:24.014Z",
    "dateUpdated": "2026-08-05T12:01:47.114Z",
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Fix a WARN during dereg_mr for DM type\n\nMemory regions (MR) of type DM (device memory) do not have an associated\numem.\n\nIn the __mlx5_ib_dereg_mr() -\u003e mlx5_free_priv_descs() flow, the code\nincorrectly takes the wrong branch, attempting to call\ndma_unmap_single() on a DMA address that is not mapped.\n\nThis results in a WARN [1], as shown below.\n\nThe issue is resolved by properly accounting for the DM type and\nensuring the correct branch is selected in mlx5_free_priv_descs().\n\n[1]\nWARNING: CPU: 12 PID: 1346 at drivers/iommu/dma-iommu.c:1230 iommu_dma_unmap_page+0x79/0x90\nModules linked in: ip6table_mangle ip6table_nat ip6table_filter ip6_tables iptable_mangle xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter rpcsec_gss_krb5 auth_rpcgss oid_registry ovelay rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi ib_umad rdma_cm ib_ipoib iw_cm ib_cm mlx5_ib ib_uverbs ib_core fuse mlx5_core\nCPU: 12 UID: 0 PID: 1346 Comm: ibv_rc_pingpong Not tainted 6.12.0-rc7+ #1631\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:iommu_dma_unmap_page+0x79/0x90\nCode: 2b 49 3b 29 72 26 49 3b 69 08 73 20 4d 89 f0 44 89 e9 4c 89 e2 48 89 ee 48 89 df 5b 5d 41 5c 41 5d 41 5e 41 5f e9 07 b8 88 ff \u003c0f\u003e 0b 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 66 0f 1f 44 00\nRSP: 0018:ffffc90001913a10 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: ffff88810194b0a8 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001\nRBP: ffff88810194b0a8 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000\nR13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000\nFS:  00007f537abdd740(0000) GS:ffff88885fb00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f537aeb8000 CR3: 000000010c248001 CR4: 0000000000372eb0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\u003cTASK\u003e\n? __warn+0x84/0x190\n? iommu_dma_unmap_page+0x79/0x90\n? report_bug+0xf8/0x1c0\n? handle_bug+0x55/0x90\n? exc_invalid_op+0x13/0x60\n? asm_exc_invalid_op+0x16/0x20\n? iommu_dma_unmap_page+0x79/0x90\ndma_unmap_page_attrs+0xe6/0x290\nmlx5_free_priv_descs+0xb0/0xe0 [mlx5_ib]\n__mlx5_ib_dereg_mr+0x37e/0x520 [mlx5_ib]\n? _raw_spin_unlock_irq+0x24/0x40\n? wait_for_completion+0xfe/0x130\n? rdma_restrack_put+0x63/0xe0 [ib_core]\nib_dereg_mr_user+0x5f/0x120 [ib_core]\n? lock_release+0xc6/0x280\ndestroy_hw_idr_uobject+0x1d/0x60 [ib_uverbs]\nuverbs_destroy_uobject+0x58/0x1d0 [ib_uverbs]\nuobj_destroy+0x3f/0x70 [ib_uverbs]\nib_uverbs_cmd_verbs+0x3e4/0xbb0 [ib_uverbs]\n? __pfx_uverbs_destroy_def_handler+0x10/0x10 [ib_uverbs]\n? lock_acquire+0xc1/0x2f0\n? ib_uverbs_ioctl+0xcb/0x170 [ib_uverbs]\n? ib_uverbs_ioctl+0x116/0x170 [ib_uverbs]\n? lock_release+0xc6/0x280\nib_uverbs_ioctl+0xe7/0x170 [ib_uverbs]\n? ib_uverbs_ioctl+0xcb/0x170 [ib_uverbs]\n__x64_sys_ioctl+0x1b0/0xa70\ndo_syscall_64+0x6b/0x140\nentry_SYSCALL_64_after_hwframe+0x76/0x7e\nRIP: 0033:0x7f537adaf17b\nCode: 0f 1e fa 48 8b 05 1d ad 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d ed ac 0c 00 f7 d8 64 89 01 48\nRSP: 002b:00007ffff218f0b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 00007ffff218f1d8 RCX: 00007f537adaf17b\nRDX: 00007ffff218f1c0 RSI: 00000000c0181b01 RDI: 0000000000000003\nRBP: 00007ffff218f1a0 R08: 00007f537aa8d010 R09: 0000561ee2e4f270\nR10: 00007f537aace3a8 R11: 0000000000000246 R12: 00007ffff218f190\nR13: 000000000000001c R14: 0000561ee2e4d7c0 R15: 00007ffff218f450\n\u003c/TASK\u003e"
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          "url": "https://git.kernel.org/stable/c/abc7b3f1f056d69a8f11d6dceecc0c9549ace770"
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      "title": "RDMA/mlx5: Fix a WARN during dereg_mr for DM type",
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mdiobus: Fix potential out-of-bounds clause 45 read/write access\n\nWhen using publicly available tools like \u0027mdio-tools\u0027 to read/write data\nfrom/to network interface and its PHY via C45 (clause 45) mdiobus,\nthere is no verification of parameters passed to the ioctl and\nit accepts any mdio address.\nCurrently there is support for 32 addresses in kernel via PHY_MAX_ADDR define,\nbut it is possible to pass higher value than that via ioctl.\nWhile read/write operation should generally fail in this case,\nmdiobus provides stats array, where wrong address may allow out-of-bounds\nread/write.\n\nFix that by adding address verification before C45 read/write operation.\nWhile this excludes this access from any statistics, it improves security of\nread/write operation."
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            {
              "lang": "en",
              "value": "AV:L - The vulnerability is reached through SIOCGMIIREG/SIOCSMIIREG ioctls issued on a local socket against a network device, via dev_ioctl() \u2192 dev_eth_ioctl() \u2192 phylink_mii_ioctl(). No network packet processing is involved, so this is local access only.\nAC:L - The attacker fully controls the 16-bit phy_id field and can deterministically select any out-of-bounds index from 32 to 65535, with no race, timing, or memory-layout condition outside their control; the OOB accounting happens on every call regardless of whether the underlying bus read/write succeeds.\nPR:L - The ioctl path is gated by ns_capable(net-\u003euser_ns, CAP_NET_ADMIN), which is namespace-relative rather than requiring real root \u2014 an unprivileged user who is root inside a user+network namespace that owns a C45-PHY-backed netdev (SR-IOV VF or DSA user port delegated to a container) satisfies it, so this is Low rather than High.\nUI:N - The attacker triggers the entire sequence themselves with a single ioctl() call; no victim action, mount, or file open is needed.\nS:U - The out-of-bounds access corrupts kernel heap memory from within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - mdiobus_stats_acct() performs a read-modify-write, so it reads 64-bit words at an attacker-chosen offset up to ~2 MB past the mii_bus allocation, and the resulting heap corruption can be groomed to modify length/index fields of adjacent objects to yield arbitrary kernel memory disclosure.\nI:H - The attacker gains a repeatable increment of two 64-bit words at a selectable 32-byte-granular offset far outside the allocation, which after heap grooming allows targeted modification of adjacent kernel objects (refcounts, sizes, pointer bytes) and is a viable path to control-flow hijack.\nA:H - Writing into unrelated slab objects and pages up to ~2 MB beyond the mii_bus allocation corrupts arbitrary kernel state and readily produces oopses, BUG_ONs, or a full panic, and the attacker can repeat it at will."
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.186",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.142",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.95",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.35",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.4",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: nci: uart: Set tty-\u003edisc_data only in success path\n\nSetting tty-\u003edisc_data before opening the NCI device means we need to\nclean it up on error paths.  This also opens some short window if device\nstarts sending data, even before NCIUARTSETDRIVER IOCTL succeeded\n(broken hardware?).  Close the window by exposing tty-\u003edisc_data only on\nthe success path, when opening of the NCI device and try_module_get()\nsucceeds.\n\nThe code differs in error path in one aspect: tty-\u003edisc_data won\u0027t be\never assigned thus NULL-ified.  This however should not be relevant\ndifference, because of \"tty-\u003edisc_data=NULL\" in nci_uart_tty_open()."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Triggering requires a local `NCIUARTSETDRIVER` ioctl on a tty fd whose line discipline was set to N_NCI, plus locally-injected tty receive data (e.g. via a pty master). No remote or adjacent-network actor can open the window on their own.\nAC:L - The attacker controls both sides of the race \u2014 one thread issues the ioctl on a pty slave while another writes to the pty master to drive `flush_to_ldisc` \u2192 `nci_uart_tty_receive()` \u2014 and the `nu-\u003eops.open()` failure that frees the object is inducible through attacker-driven memory pressure, so it can be retried until it lands.\nPR:L - `nci_uart_tty_ioctl()` performs no capability check and `/dev/ptmx` is world-accessible; on affected systems the nci_uart/nfcmrvl_uart modules are already resident, so the `capable(CAP_SYS_MODULE)` ldisc-autoload gate is not reached and a plain unprivileged user suffices.\nUI:N - The attacking process performs every step itself \u2014 opening the pty, setting the line discipline, issuing the ioctl and feeding the data. No victim action is involved.\nS:U - The use-after-free corrupts kernel heap state within the same kernel security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The freed `struct nci_uart` is reused while `nci_uart_default_recv_buf()` still dereferences `nu-\u003endev`, `nu-\u003erx_skb`, and `nu-\u003etty`, so a heap-sprayed replacement yields controlled kernel-memory reads and disclosure of adjacent slab contents.\nI:H - The stale object contains the `nu-\u003eops` function-pointer table (`ops.recv`, `ops.tx_start`) and a `work_struct`, giving an attacker who reclaims the slab a controlled indirect call and skb-pointer writes \u2014 sufficient for control-flow hijack and privilege escalation.\nA:H - Even without successful exploitation the use-after-free dereferences and the `schedule_work()` on freed memory reliably produce a kernel oops or panic, and the race can be retried indefinitely."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:01:43.897Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a514fca2b8e95838a3ba600f31a18fa60b76d893"
        },
        {
          "url": "https://git.kernel.org/stable/c/000bfbc6bc334a93fffca8f5aa9583e7b6356cb5"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac6992f72bd8e22679c1e147ac214de6a7093c23"
        },
        {
          "url": "https://git.kernel.org/stable/c/dc7722619a9c307e9938d735cf4a2210d3d48dcb"
        },
        {
          "url": "https://git.kernel.org/stable/c/a8acc7080ad55c5402a1b818b3008998247dda87"
        },
        {
          "url": "https://git.kernel.org/stable/c/55c3dbd8389636161090a2b2b6d2d709b9602e9c"
        },
        {
          "url": "https://git.kernel.org/stable/c/e9799db771b2d574d5bf0dfb3177485e5f40d4d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc27ab48904ceb7e4792f0c400f1ef175edf16fe"
        }
      ],
      "title": "NFC: nci: uart: Set tty-\u003edisc_data only in success path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38416",
    "datePublished": "2025-07-25T14:00:17.849Z",
    "dateReserved": "2025-04-16T04:51:24.014Z",
    "dateUpdated": "2026-08-05T12:01:43.897Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}