{
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                  "vulnerable": true
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niavf: fix hang on reboot with ice\n\nWhen a system with E810 with existing VFs gets rebooted the following\nhang may be observed.\n\n Pid 1 is hung in iavf_remove(), part of a network driver:\n PID: 1        TASK: ffff965400e5a340  CPU: 24   COMMAND: \"systemd-shutdow\"\n  #0 [ffffaad04005fa50] __schedule at ffffffff8b3239cb\n  #1 [ffffaad04005fae8] schedule at ffffffff8b323e2d\n  #2 [ffffaad04005fb00] schedule_hrtimeout_range_clock at ffffffff8b32cebc\n  #3 [ffffaad04005fb80] usleep_range_state at ffffffff8b32c930\n  #4 [ffffaad04005fbb0] iavf_remove at ffffffffc12b9b4c [iavf]\n  #5 [ffffaad04005fbf0] pci_device_remove at ffffffff8add7513\n  #6 [ffffaad04005fc10] device_release_driver_internal at ffffffff8af08baa\n  #7 [ffffaad04005fc40] pci_stop_bus_device at ffffffff8adcc5fc\n  #8 [ffffaad04005fc60] pci_stop_and_remove_bus_device at ffffffff8adcc81e\n  #9 [ffffaad04005fc70] pci_iov_remove_virtfn at ffffffff8adf9429\n #10 [ffffaad04005fca8] sriov_disable at ffffffff8adf98e4\n #11 [ffffaad04005fcc8] ice_free_vfs at ffffffffc04bb2c8 [ice]\n #12 [ffffaad04005fd10] ice_remove at ffffffffc04778fe [ice]\n #13 [ffffaad04005fd38] ice_shutdown at ffffffffc0477946 [ice]\n #14 [ffffaad04005fd50] pci_device_shutdown at ffffffff8add58f1\n #15 [ffffaad04005fd70] device_shutdown at ffffffff8af05386\n #16 [ffffaad04005fd98] kernel_restart at ffffffff8a92a870\n #17 [ffffaad04005fda8] __do_sys_reboot at ffffffff8a92abd6\n #18 [ffffaad04005fee0] do_syscall_64 at ffffffff8b317159\n #19 [ffffaad04005ff08] __context_tracking_enter at ffffffff8b31b6fc\n #20 [ffffaad04005ff18] syscall_exit_to_user_mode at ffffffff8b31b50d\n #21 [ffffaad04005ff28] do_syscall_64 at ffffffff8b317169\n #22 [ffffaad04005ff50] entry_SYSCALL_64_after_hwframe at ffffffff8b40009b\n     RIP: 00007f1baa5c13d7  RSP: 00007fffbcc55a98  RFLAGS: 00000202\n     RAX: ffffffffffffffda  RBX: 0000000000000000  RCX: 00007f1baa5c13d7\n     RDX: 0000000001234567  RSI: 0000000028121969  RDI: 00000000fee1dead\n     RBP: 00007fffbcc55ca0   R8: 0000000000000000   R9: 00007fffbcc54e90\n     R10: 00007fffbcc55050  R11: 0000000000000202  R12: 0000000000000005\n     R13: 0000000000000000  R14: 00007fffbcc55af0  R15: 0000000000000000\n     ORIG_RAX: 00000000000000a9  CS: 0033  SS: 002b\n\nDuring reboot all drivers PM shutdown callbacks are invoked.\nIn iavf_shutdown() the adapter state is changed to __IAVF_REMOVE.\nIn ice_shutdown() the call chain above is executed, which at some point\ncalls iavf_remove(). However iavf_remove() expects the VF to be in one\nof the states __IAVF_RUNNING, __IAVF_DOWN or __IAVF_INIT_FAILED. If\nthat\u0027s not the case it sleeps forever.\nSo if iavf_shutdown() gets invoked before iavf_remove() the system will\nhang indefinitely because the adapter is already in state __IAVF_REMOVE.\n\nFix this by returning from iavf_remove() if the state is __IAVF_REMOVE,\nas we already went through iavf_shutdown()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T09:27:39.305Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7a29799fc141ba9e6cf921fc8e958e3398ad1a4f"
        },
        {
          "url": "https://git.kernel.org/stable/c/502b898235f06130750c91512c86dd0e9efe28e6"
        },
        {
          "url": "https://git.kernel.org/stable/c/f752ace58867de3c063512b21e0f1694fc27f043"
        },
        {
          "url": "https://git.kernel.org/stable/c/4e264be98b88a6d6f476c11087fe865696e8bef5"
        }
      ],
      "title": "iavf: fix hang on reboot with ice",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53064",
    "datePublished": "2025-05-02T15:55:17.971Z",
    "dateReserved": "2025-05-02T15:51:43.548Z",
    "dateUpdated": "2026-05-27T09:27:39.305Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nax25: rcu protect dev-\u003eax25_ptr\n\nsyzbot found a lockdep issue [1].\n\nWe should remove ax25 RTNL dependency in ax25_setsockopt()\n\nThis should also fix a variety of possible UAF in ax25.\n\n[1]\n\nWARNING: possible circular locking dependency detected\n6.13.0-rc3-syzkaller-00762-g9268abe611b0 #0 Not tainted\n------------------------------------------------------\nsyz.5.1818/12806 is trying to acquire lock:\n ffffffff8fcb3988 (rtnl_mutex){+.+.}-{4:4}, at: ax25_setsockopt+0xa55/0xe90 net/ax25/af_ax25.c:680\n\nbut task is already holding lock:\n ffff8880617ac258 (sk_lock-AF_AX25){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1618 [inline]\n ffff8880617ac258 (sk_lock-AF_AX25){+.+.}-{0:0}, at: ax25_setsockopt+0x209/0xe90 net/ax25/af_ax25.c:574\n\nwhich lock already depends on the new lock.\n\nthe existing dependency chain (in reverse order) is:\n\n-\u003e #1 (sk_lock-AF_AX25){+.+.}-{0:0}:\n        lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849\n        lock_sock_nested+0x48/0x100 net/core/sock.c:3642\n        lock_sock include/net/sock.h:1618 [inline]\n        ax25_kill_by_device net/ax25/af_ax25.c:101 [inline]\n        ax25_device_event+0x24d/0x580 net/ax25/af_ax25.c:146\n        notifier_call_chain+0x1a5/0x3f0 kernel/notifier.c:85\n       __dev_notify_flags+0x207/0x400\n        dev_change_flags+0xf0/0x1a0 net/core/dev.c:9026\n        dev_ifsioc+0x7c8/0xe70 net/core/dev_ioctl.c:563\n        dev_ioctl+0x719/0x1340 net/core/dev_ioctl.c:820\n        sock_do_ioctl+0x240/0x460 net/socket.c:1234\n        sock_ioctl+0x626/0x8e0 net/socket.c:1339\n        vfs_ioctl fs/ioctl.c:51 [inline]\n        __do_sys_ioctl fs/ioctl.c:906 [inline]\n        __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892\n        do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n        do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n       entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n-\u003e #0 (rtnl_mutex){+.+.}-{4:4}:\n        check_prev_add kernel/locking/lockdep.c:3161 [inline]\n        check_prevs_add kernel/locking/lockdep.c:3280 [inline]\n        validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904\n        __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226\n        lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849\n        __mutex_lock_common kernel/locking/mutex.c:585 [inline]\n        __mutex_lock+0x1ac/0xee0 kernel/locking/mutex.c:735\n        ax25_setsockopt+0xa55/0xe90 net/ax25/af_ax25.c:680\n        do_sock_setsockopt+0x3af/0x720 net/socket.c:2324\n        __sys_setsockopt net/socket.c:2349 [inline]\n        __do_sys_setsockopt net/socket.c:2355 [inline]\n        __se_sys_setsockopt net/socket.c:2352 [inline]\n        __x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2352\n        do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n        do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n       entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nother info that might help us debug this:\n\n Possible unsafe locking scenario:\n\n       CPU0                    CPU1\n       ----                    ----\n  lock(sk_lock-AF_AX25);\n                               lock(rtnl_mutex);\n                               lock(sk_lock-AF_AX25);\n  lock(rtnl_mutex);\n\n *** DEADLOCK ***\n\n1 lock held by syz.5.1818/12806:\n  #0: ffff8880617ac258 (sk_lock-AF_AX25){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1618 [inline]\n  #0: ffff8880617ac258 (sk_lock-AF_AX25){+.+.}-{0:0}, at: ax25_setsockopt+0x209/0xe90 net/ax25/af_ax25.c:574\n\nstack backtrace:\nCPU: 1 UID: 0 PID: 12806 Comm: syz.5.1818 Not tainted 6.13.0-rc3-syzkaller-00762-g9268abe611b0 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nCall Trace:\n \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:94 [inline]\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n  print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074\n  check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206\n  check_prev_add kernel/locking/lockdep.c:3161 [inline]\n  check_prevs_add kernel/lockin\n---truncated---"
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              "value": "AV:L - The controllable attack path is an AF_AX25 socket driven by local syscalls (setsockopt SO_BINDTODEVICE, connect/sendmsg autobind, close), which is what both frees the ax25_dev and re-dereferences the dangling dev-\u003eax25_ptr. Although received AX.25 frames also read dev-\u003eax25_ptr in ax25_rcv(), an adjacent radio/L2 peer cannot itself cause the free, so the attacker must be local.\nAC:L - No race needs to be won: SO_BINDTODEVICE stores ax25-\u003eax25_dev without a reference while ax25_release() drops one, so a single setsockopt+close deterministically drives the refcount to zero and kfree()s the object still published in dev-\u003eax25_ptr. The pure device-down race variant is also attacker-driven by spinning setsockopt/connect in a loop.\nPR:L - ax25_create() imposes no capability check for SOCK_DGRAM/SOCK_SEQPACKET, and the AF_AX25 module autoloads via the net-pf-3 alias, so any unprivileged local user in the init namespace can reach every vulnerable path. Root is only needed for the one-time deployment setup of the AX.25 port, not by the attacker.\nUI:N - The entire sequence is performed by the attacker\u0027s own process through socket(), setsockopt(), connect()/sendmsg() and close(); no victim action is involved.\nS:U - The freed ax25_dev and the corrupted kernel heap are entirely within the kernel\u0027s own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - After the free, ax25_fillin_cb() copies bytes from the reclaimed slab object into the socket\u0027s t1/t2/t3/n2/paclen/window/backoff fields, which userspace reads back with getsockopt() \u2014 a direct kernel heap disclosure \u2014 and the general UAF read of ax25_dev-\u003edev/-\u003eforward enables broader information leakage.\nI:H - The dangling pointer yields repeated refcount_dec() and stores to ax25_dev-\u003eforward and -\u003edevice_up into memory that has been reallocated for other kernel objects, giving a controlled decrement/write primitive on a groomed heap that is exploitable for privilege escalation.\nA:H - Dereferencing and freeing the already-freed ax25_dev reliably produces a kernel oops/panic (and netdev refcount underflow), and the same commit fixes a genuine sk_lock-AF_AX25 versus rtnl_mutex ABBA deadlock that permanently wedges the rtnl mutex and with it the entire networking stack."
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      "title": "scsi: qla1280: Fix kernel oops when debug level \u003e 2",
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngtp: Suppress list corruption splat in gtp_net_exit_batch_rtnl().\n\nBrad Spengler reported the list_del() corruption splat in\ngtp_net_exit_batch_rtnl(). [0]\n\nCommit eb28fd76c0a0 (\"gtp: Destroy device along with udp socket\u0027s netns\ndismantle.\") added the for_each_netdev() loop in gtp_net_exit_batch_rtnl()\nto destroy devices in each netns as done in geneve and ip tunnels.\n\nHowever, this could trigger -\u003edellink() twice for the same device during\n-\u003eexit_batch_rtnl().\n\nSay we have two netns A \u0026 B and gtp device B that resides in netns B but\nwhose UDP socket is in netns A.\n\n  1. cleanup_net() processes netns A and then B.\n\n  2. gtp_net_exit_batch_rtnl() finds the device B while iterating\n     netns A\u0027s gn-\u003egtp_dev_list and calls -\u003edellink().\n\n  [ device B is not yet unlinked from netns B\n    as unregister_netdevice_many() has not been called. ]\n\n  3. gtp_net_exit_batch_rtnl() finds the device B while iterating\n     netns B\u0027s for_each_netdev() and calls -\u003edellink().\n\ngtp_dellink() cleans up the device\u0027s hash table, unlinks the dev from\ngn-\u003egtp_dev_list, and calls unregister_netdevice_queue().\n\nBasically, calling gtp_dellink() multiple times is fine unless\nCONFIG_DEBUG_LIST is enabled.\n\nLet\u0027s remove for_each_netdev() in gtp_net_exit_batch_rtnl() and\ndelegate the destruction to default_device_exit_batch() as done\nin bareudp.\n\n[0]:\nlist_del corruption, ffff8880aaa62c00-\u003enext (autoslab_size_M_dev_P_net_core_dev_11127_8_1328_8_S_4096_A_64_n_139+0xc00/0x1000 [slab object]) is LIST_POISON1 (ffffffffffffff02) (prev is 0xffffffffffffff04)\nkernel BUG at lib/list_debug.c:58!\nOops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN\nCPU: 1 UID: 0 PID: 1804 Comm: kworker/u8:7 Tainted: G                T   6.12.13-grsec-full-20250211091339 #1\nTainted: [T]=RANDSTRUCT\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nWorkqueue: netns cleanup_net\nRIP: 0010:[\u003cffffffff84947381\u003e] __list_del_entry_valid_or_report+0x141/0x200 lib/list_debug.c:58\nCode: c2 76 91 31 c0 e8 9f b1 f7 fc 0f 0b 4d 89 f0 48 c7 c1 02 ff ff ff 48 89 ea 48 89 ee 48 c7 c7 e0 c2 76 91 31 c0 e8 7f b1 f7 fc \u003c0f\u003e 0b 4d 89 e8 48 c7 c1 04 ff ff ff 48 89 ea 48 89 ee 48 c7 c7 60\nRSP: 0018:fffffe8040b4fbd0 EFLAGS: 00010283\nRAX: 00000000000000cc RBX: dffffc0000000000 RCX: ffffffff818c4054\nRDX: ffffffff84947381 RSI: ffffffff818d1512 RDI: 0000000000000000\nRBP: ffff8880aaa62c00 R08: 0000000000000001 R09: fffffbd008169f32\nR10: fffffe8040b4f997 R11: 0000000000000001 R12: a1988d84f24943e4\nR13: ffffffffffffff02 R14: ffffffffffffff04 R15: ffff8880aaa62c08\nRBX: kasan shadow of 0x0\nRCX: __wake_up_klogd.part.0+0x74/0xe0 kernel/printk/printk.c:4554\nRDX: __list_del_entry_valid_or_report+0x141/0x200 lib/list_debug.c:58\nRSI: vprintk+0x72/0x100 kernel/printk/printk_safe.c:71\nRBP: autoslab_size_M_dev_P_net_core_dev_11127_8_1328_8_S_4096_A_64_n_139+0xc00/0x1000 [slab object]\nRSP: process kstack fffffe8040b4fbd0+0x7bd0/0x8000 [kworker/u8:7+netns 1804 ]\nR09: kasan shadow of process kstack fffffe8040b4f990+0x7990/0x8000 [kworker/u8:7+netns 1804 ]\nR10: process kstack fffffe8040b4f997+0x7997/0x8000 [kworker/u8:7+netns 1804 ]\nR15: autoslab_size_M_dev_P_net_core_dev_11127_8_1328_8_S_4096_A_64_n_139+0xc08/0x1000 [slab object]\nFS:  0000000000000000(0000) GS:ffff888116000000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000748f5372c000 CR3: 0000000015408000 CR4: 00000000003406f0 shadow CR4: 00000000003406f0\nStack:\n 0000000000000000 ffffffff8a0c35e7 ffffffff8a0c3603 ffff8880aaa62c00\n ffff8880aaa62c00 0000000000000004 ffff88811145311c 0000000000000005\n 0000000000000001 ffff8880aaa62000 fffffe8040b4fd40 ffffffff8a0c360d\nCall Trace:\n \u003cTASK\u003e\n [\u003cffffffff8a0c360d\u003e] __list_del_entry_valid include/linux/list.h:131 [inline] fffffe8040b4fc28\n [\u003cffffffff8a0c360d\u003e] __list_del_entry include/linux/list.h:248 [inline] fffffe8040b4fc28\n [\u003cffffffff8a0c360d\u003e] list_del include/linux/list.h:262 [inl\n---truncated---"
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        },
        {
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    "datePublished": "2025-03-12T09:42:21.901Z",
    "dateReserved": "2024-12-29T08:45:45.781Z",
    "dateUpdated": "2026-07-14T12:40:23.160Z",
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              "confidentialityImpact": "NONE",
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              "scope": "UNCHANGED",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: check vxlan_vnigroup_init() return value\n\nvxlan_init() must check vxlan_vnigroup_init() success\notherwise a crash happens later, spotted by syzbot.\n\nOops: general protection fault, probably for non-canonical address 0xdffffc000000002c: 0000 [#1] PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000160-0x0000000000000167]\nCPU: 0 UID: 0 PID: 7313 Comm: syz-executor147 Not tainted 6.14.0-rc1-syzkaller-00276-g69b54314c975 #0\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\n RIP: 0010:vxlan_vnigroup_uninit+0x89/0x500 drivers/net/vxlan/vxlan_vnifilter.c:912\nCode: 00 48 8b 44 24 08 4c 8b b0 98 41 00 00 49 8d 86 60 01 00 00 48 89 c2 48 89 44 24 10 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 \u003c80\u003e 3c 02 00 0f 85 4d 04 00 00 49 8b 86 60 01 00 00 48 ba 00 00 00\nRSP: 0018:ffffc9000cc1eea8 EFLAGS: 00010202\nRAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff8672effb\nRDX: 000000000000002c RSI: ffffffff8672ecb9 RDI: ffff8880461b4f18\nRBP: ffff8880461b4ef4 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000001 R11: 0000000000000000 R12: 0000000000020000\nR13: ffff8880461b0d80 R14: 0000000000000000 R15: dffffc0000000000\nFS:  00007fecfa95d6c0(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fecfa95cfb8 CR3: 000000004472c000 CR4: 0000000000352ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n  vxlan_uninit+0x1ab/0x200 drivers/net/vxlan/vxlan_core.c:2942\n  unregister_netdevice_many_notify+0x12d6/0x1f30 net/core/dev.c:11824\n  unregister_netdevice_many net/core/dev.c:11866 [inline]\n  unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11736\n  register_netdevice+0x1829/0x1eb0 net/core/dev.c:10901\n  __vxlan_dev_create+0x7c6/0xa30 drivers/net/vxlan/vxlan_core.c:3981\n  vxlan_newlink+0xd1/0x130 drivers/net/vxlan/vxlan_core.c:4407\n  rtnl_newlink_create net/core/rtnetlink.c:3795 [inline]\n  __rtnl_newlink net/core/rtnetlink.c:3906 [inline]"
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          "url": "https://git.kernel.org/stable/c/5805402dcc56241987bca674a1b4da79a249bab7"
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      "title": "vxlan: check vxlan_vnigroup_init() return value",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix data-races around sk-\u003esk_forward_alloc\n\nSyzkaller reported this warning:\n ------------[ cut here ]------------\n WARNING: CPU: 0 PID: 16 at net/ipv4/af_inet.c:156 inet_sock_destruct+0x1c5/0x1e0\n Modules linked in:\n CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-rc5 #26\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n RIP: 0010:inet_sock_destruct+0x1c5/0x1e0\n Code: 24 12 4c 89 e2 5b 48 c7 c7 98 ec bb 82 41 5c e9 d1 18 17 ff 4c 89 e6 5b 48 c7 c7 d0 ec bb 82 41 5c e9 bf 18 17 ff 0f 0b eb 83 \u003c0f\u003e 0b eb 97 0f 0b eb 87 0f 0b e9 68 ff ff ff 66 66 2e 0f 1f 84 00\n RSP: 0018:ffffc9000008bd90 EFLAGS: 00010206\n RAX: 0000000000000300 RBX: ffff88810b172a90 RCX: 0000000000000007\n RDX: 0000000000000002 RSI: 0000000000000300 RDI: ffff88810b172a00\n RBP: ffff88810b172a00 R08: ffff888104273c00 R09: 0000000000100007\n R10: 0000000000020000 R11: 0000000000000006 R12: ffff88810b172a00\n R13: 0000000000000004 R14: 0000000000000000 R15: ffff888237c31f78\n FS:  0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007ffc63fecac8 CR3: 000000000342e000 CR4: 00000000000006f0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n  \u003cTASK\u003e\n  ? __warn+0x88/0x130\n  ? inet_sock_destruct+0x1c5/0x1e0\n  ? report_bug+0x18e/0x1a0\n  ? handle_bug+0x53/0x90\n  ? exc_invalid_op+0x18/0x70\n  ? asm_exc_invalid_op+0x1a/0x20\n  ? inet_sock_destruct+0x1c5/0x1e0\n  __sk_destruct+0x2a/0x200\n  rcu_do_batch+0x1aa/0x530\n  ? rcu_do_batch+0x13b/0x530\n  rcu_core+0x159/0x2f0\n  handle_softirqs+0xd3/0x2b0\n  ? __pfx_smpboot_thread_fn+0x10/0x10\n  run_ksoftirqd+0x25/0x30\n  smpboot_thread_fn+0xdd/0x1d0\n  kthread+0xd3/0x100\n  ? __pfx_kthread+0x10/0x10\n  ret_from_fork+0x34/0x50\n  ? __pfx_kthread+0x10/0x10\n  ret_from_fork_asm+0x1a/0x30\n  \u003c/TASK\u003e\n ---[ end trace 0000000000000000 ]---\n\nIts possible that two threads call tcp_v6_do_rcv()/sk_forward_alloc_add()\nconcurrently when sk-\u003esk_state == TCP_LISTEN with sk-\u003esk_lock unlocked,\nwhich triggers a data-race around sk-\u003esk_forward_alloc:\ntcp_v6_rcv\n    tcp_v6_do_rcv\n        skb_clone_and_charge_r\n            sk_rmem_schedule\n                __sk_mem_schedule\n                    sk_forward_alloc_add()\n            skb_set_owner_r\n                sk_mem_charge\n                    sk_forward_alloc_add()\n        __kfree_skb\n            skb_release_all\n                skb_release_head_state\n                    sock_rfree\n                        sk_mem_uncharge\n                            sk_forward_alloc_add()\n                            sk_mem_reclaim\n                                // set local var reclaimable\n                                __sk_mem_reclaim\n                                    sk_forward_alloc_add()\n\nIn this syzkaller testcase, two threads call\ntcp_v6_do_rcv() with skb-\u003etruesize=768, the sk_forward_alloc changes like\nthis:\n (cpu 1)             | (cpu 2)             | sk_forward_alloc\n ...                 | ...                 | 0\n __sk_mem_schedule() |                     | +4096 = 4096\n                     | __sk_mem_schedule() | +4096 = 8192\n sk_mem_charge()     |                     | -768  = 7424\n                     | sk_mem_charge()     | -768  = 6656\n ...                 |    ...              |\n sk_mem_uncharge()   |                     | +768  = 7424\n reclaimable=7424    |                     |\n                     | sk_mem_uncharge()   | +768  = 8192\n                     | reclaimable=8192    |\n __sk_mem_reclaim()  |                     | -4096 = 4096\n                     | __sk_mem_reclaim()  | -8192 = -4096 != 0\n\nThe skb_clone_and_charge_r() should not be called in tcp_v6_do_rcv() when\nsk-\u003esk_state is TCP_LISTEN, it happens later in tcp_v6_syn_recv_sock().\nFix the same issue in dccp_v6_do_rcv()."
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              "value": "AV:N - The vulnerable code is in the IPv6 TCP receive path (`tcp_v6_rcv()` \u2192 `tcp_v6_do_rcv()`), executed directly on inbound SYN packets from any remote peer; a remote attacker reaches it by sending TCP/IPv6 segments to a listening socket. The same defect exists in the DCCP IPv6 receive path.\nAC:L - The attacker controls both sides of the race by sending a burst of concurrent SYNs from different source ports/addresses, which RSS/RPS distributes across CPUs that all enter `tcp_v6_do_rcv()` on the same listener with no socket lock held. No memory layout, timing window outside attacker influence, or victim state is required, and syzkaller reproduces it routinely.\nPR:N - The racing code runs while processing a SYN on a listening socket, entirely before connection establishment or any authentication, so no credentials of any kind are needed. Setting the `IPV6_RECV*` option that arms the path is done by the victim server (or by an unprivileged local user on their own listener), not by the attacker.\nUI:N - Triggering requires only that packets be sent to an already-listening socket; no action by any local user or administrator is needed.\nS:U - The corrupted state (`sk-\u003esk_forward_alloc`, `tcp_memory_allocated`, memcg skmem counters) and the resulting warning/panic are all within the kernel\u0027s own security authority, with no crossing into a hypervisor, IOMMU, or other separate authority.\nC:N - The defect is a non-atomic read-modify-write on integer accounting counters; it produces no out-of-bounds read, no use-after-free, and no path by which memory contents or kernel pointers are disclosed to the attacker.\nI:N - No attacker-controlled data is written and no memory corruption primitive is created \u2014 only the socket\u0027s own memory-accounting counters become inconsistent, which is not a modification of protected data or control flow.\nA:H - The imbalance trips `WARN_ON_ONCE(sk_forward_alloc_get(sk))` in `inet_sock_destruct()` from softirq context, which is an immediate kernel panic on `panic_on_warn` systems, and the over-reclaim corrupts the global `tcp_memory_allocated` counter and memcg skmem accounting, breaking system-wide TCP memory limits (unbounded growth toward OOM, or permanent memory pressure across all TCP sockets). It is repeatable at will by an unauthenticated remote attacker."
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              "value": "AV:N - The buggy `nft_pipapo_lookup()` is the per-packet set-matching op invoked from `nft_lookup_eval` on header fields (`ip saddr . tcp dport . meta l4proto`) taken directly from received packets, so a remote off-host attacker\u0027s traffic drives the defective classification. The generic C path is what runs on all non-x86_64 firewall/router deployments and on x86_64 via the `!irq_fpu_usable()` fallback.\nAC:L - Once a ruleset uses the common concat-range set layout where the first field expands to fewer rules than a later field, the wrong-match behavior is fully deterministic and repeatable \u2014 the attacker simply sends packets and can probe which header values are falsely accepted. No race, no memory-layout dependency, no unknown runtime state.\nPR:N - An unauthenticated, unprivileged remote host needs only to emit packets at the filtering system to reach the miscomputed lookup; no account, credential, or capability on the target is involved. (The control-plane variant via `pipapo_get()` needs only CAP_NET_ADMIN, itself obtainable unprivileged through `unshare -Urn`.)\nUI:N - Classification happens automatically in the packet path for every frame traversing the affected rule; no administrator or victim action is needed for the attacker\u0027s traffic to be misclassified.\nS:U - The defect and its consequences are contained in the kernel\u0027s netfilter/nf_tables engine within a single security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The flaw defeats the packet filter itself: a source address/port/protocol tuple that policy denies falsely matches an allow-set entry, granting an unauthenticated remote attacker reach to services (management ports, databases, internal listeners) whose data the ruleset was configured to keep unreachable, and `map` sets can steer traffic to an unintended internal destination.\nI:H - The kernel silently enforces a falsified classification result, accepting traffic that must be dropped, and on the control plane `pipapo_get()` makes `nft get/add/delete element` operate on the wrong element, so a delete removes an unrelated entry and the enforced security policy is corrupted without any error being reported.\nA:H - The same systematic false-positive makes permitted traffic match drop/reject entries, persistently blackholing legitimate flows, while insert returning spurious `-EEXIST`/`-ENOTEMPTY` and deletes hitting the wrong element leave the administrator unable to repair the ruleset \u2014 a sustained loss of filtering and connectivity for the affected services."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/numa: Fix the potential null pointer dereference in task_numa_work()\n\nWhen running stress-ng-vm-segv test, we found a null pointer dereference\nerror in task_numa_work(). Here is the backtrace:\n\n  [323676.066985] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020\n  ......\n  [323676.067108] CPU: 35 PID: 2694524 Comm: stress-ng-vm-se\n  ......\n  [323676.067113] pstate: 23401009 (nzCv daif +PAN -UAO +TCO +DIT +SSBS BTYPE=--)\n  [323676.067115] pc : vma_migratable+0x1c/0xd0\n  [323676.067122] lr : task_numa_work+0x1ec/0x4e0\n  [323676.067127] sp : ffff8000ada73d20\n  [323676.067128] x29: ffff8000ada73d20 x28: 0000000000000000 x27: 000000003e89f010\n  [323676.067130] x26: 0000000000080000 x25: ffff800081b5c0d8 x24: ffff800081b27000\n  [323676.067133] x23: 0000000000010000 x22: 0000000104d18cc0 x21: ffff0009f7158000\n  [323676.067135] x20: 0000000000000000 x19: 0000000000000000 x18: ffff8000ada73db8\n  [323676.067138] x17: 0001400000000000 x16: ffff800080df40b0 x15: 0000000000000035\n  [323676.067140] x14: ffff8000ada73cc8 x13: 1fffe0017cc72001 x12: ffff8000ada73cc8\n  [323676.067142] x11: ffff80008001160c x10: ffff000be639000c x9 : ffff8000800f4ba4\n  [323676.067145] x8 : ffff000810375000 x7 : ffff8000ada73974 x6 : 0000000000000001\n  [323676.067147] x5 : 0068000b33e26707 x4 : 0000000000000001 x3 : ffff0009f7158000\n  [323676.067149] x2 : 0000000000000041 x1 : 0000000000004400 x0 : 0000000000000000\n  [323676.067152] Call trace:\n  [323676.067153]  vma_migratable+0x1c/0xd0\n  [323676.067155]  task_numa_work+0x1ec/0x4e0\n  [323676.067157]  task_work_run+0x78/0xd8\n  [323676.067161]  do_notify_resume+0x1ec/0x290\n  [323676.067163]  el0_svc+0x150/0x160\n  [323676.067167]  el0t_64_sync_handler+0xf8/0x128\n  [323676.067170]  el0t_64_sync+0x17c/0x180\n  [323676.067173] Code: d2888001 910003fd f9000bf3 aa0003f3 (f9401000)\n  [323676.067177] SMP: stopping secondary CPUs\n  [323676.070184] Starting crashdump kernel...\n\nstress-ng-vm-segv in stress-ng is used to stress test the SIGSEGV error\nhandling function of the system, which tries to cause a SIGSEGV error on\nreturn from unmapping the whole address space of the child process.\n\nNormally this program will not cause kernel crashes. But before the\nmunmap system call returns to user mode, a potential task_numa_work()\nfor numa balancing could be added and executed. In this scenario, since the\nchild process has no vma after munmap, the vma_next() in task_numa_work()\nwill return a null pointer even if the vma iterator restarts from 0.\n\nRecheck the vma pointer before dereferencing it in task_numa_work()."
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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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            {
              "lang": "en",
              "value": "AV:L - The bug is in the local ndo_start_xmit TX path (otx2_xmit/otx2vf_xmit \u2192 otx2_sq_append_skb) on Marvell OcteonTX2 PF/VF NICs; it is driver TX-ring bookkeeping under local transmit load, not parsing of remotely injected frames.\nAC:L - An attacker who can generate sustained TX traffic fully drives ring wrap and widens the HW-SQB-free versus NAPI-CQE window (IRQ coalescing/NAPI budget), so the index reuse and wrong-skb free are reliably inducible with no attacker-uncontrollable precondition.\nPR:L - Any unprivileged local user (or container with a delegated SR-IOV VF) can open sockets and send traffic out an already-up octeontx2 interface without CAP_NET_ADMIN or init-namespace root.\nUI:N - The attacker triggers the defect solely by generating their own transmit traffic; no separate victim action such as mounting a filesystem or opening a crafted file is required.\nS:U - Impact is confined to host-kernel sk_buff/DMA state within the same OS security authority; this is not a VM escape, IOMMU boundary bypass, or other cross-authority compromise.\nC:H - Reusing an SQE index before CQE processing overwrites sg[].skb and causes otx2_snd_pkt_handler to dma_unmap and napi_consume_skb the new in-flight skb while HW may still DMA-read its pages, a use-after-free/DMA-after-free that can disclose recycled page contents (including via transmission on the wire).\nI:H - The same premature free/unmap of an in-flight sk_buff and its DMA-mapped fragments is a reclaimable heap use-after-free under attacker-driven TX load; per UAF guidance this class enables heap corruption and control-flow hijack primitives.\nA:H - Losing the prior SKB pointer permanently leaks sk_buffs under load, and freeing/unmapping the wrong in-flight packet can IOMMU-fault or oops the kernel; any such UAF/crash scores Availability High."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:56:28.608Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/015e3c0a3b16193aab23beefe4719484b9984c2d"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0dfc4c88ef39be0ba736aa0ce6119263fc19aeb"
        }
      ],
      "title": "octeontx2-pf: Fix SQE threshold checking",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49858",
    "datePublished": "2025-05-01T14:10:11.559Z",
    "dateReserved": "2025-05-01T14:05:17.235Z",
    "dateUpdated": "2026-08-05T08:56:28.608Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}