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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix crash by keep old cfg when update TCs more than queues\n\nThere are problems if allocated queues less than Traffic Classes.\n\nCommit a632b2a4c920 (\"ice: ethtool: Prohibit improper channel config\nfor DCB\") already disallow setting less queues than TCs.\n\nAnother case is if we first set less queues, and later update more TCs\nconfig due to LLDP, ice_vsi_cfg_tc() will failed but left dirty\nnum_txq/rxq and tc_cfg in vsi, that will cause invalid pointer access.\n\n[   95.968089] ice 0000:3b:00.1: More TCs defined than queues/rings allocated.\n[   95.968092] ice 0000:3b:00.1: Trying to use more Rx queues (8), than were allocated (1)!\n[   95.968093] ice 0000:3b:00.1: Failed to config TC for VSI index: 0\n[   95.969621] general protection fault: 0000 [#1] SMP NOPTI\n[   95.969705] CPU: 1 PID: 58405 Comm: lldpad Kdump: loaded Tainted: G     U  W  O     --------- -t - 4.18.0 #1\n[   95.969867] Hardware name: O.E.M/BC11SPSCB10, BIOS 8.23 12/30/2021\n[   95.969992] RIP: 0010:devm_kmalloc+0xa/0x60\n[   95.970052] Code: 5c ff ff ff 31 c0 5b 5d 41 5c c3 b8 f4 ff ff ff eb f4 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 89 d1 \u003c8b\u003e 97 60 02 00 00 48 8d 7e 18 48 39 f7 72 3f 55 89 ce 53 48 8b 4c\n[   95.970344] RSP: 0018:ffffc9003f553888 EFLAGS: 00010206\n[   95.970425] RAX: dead000000000200 RBX: ffffea003c425b00 RCX: 00000000006080c0\n[   95.970536] RDX: 00000000006080c0 RSI: 0000000000000200 RDI: dead000000000200\n[   95.970648] RBP: dead000000000200 R08: 00000000000463c0 R09: ffff888ffa900000\n[   95.970760] R10: 0000000000000000 R11: 0000000000000002 R12: ffff888ff6b40100\n[   95.970870] R13: ffff888ff6a55018 R14: 0000000000000000 R15: ffff888ff6a55460\n[   95.970981] FS:  00007f51b7d24700(0000) GS:ffff88903ee80000(0000) knlGS:0000000000000000\n[   95.971108] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[   95.971197] CR2: 00007fac5410d710 CR3: 0000000f2c1de002 CR4: 00000000007606e0\n[   95.971309] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[   95.971419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[   95.971530] PKRU: 55555554\n[   95.971573] Call Trace:\n[   95.971622]  ice_setup_rx_ring+0x39/0x110 [ice]\n[   95.971695]  ice_vsi_setup_rx_rings+0x54/0x90 [ice]\n[   95.971774]  ice_vsi_open+0x25/0x120 [ice]\n[   95.971843]  ice_open_internal+0xb8/0x1f0 [ice]\n[   95.971919]  ice_ena_vsi+0x4f/0xd0 [ice]\n[   95.971987]  ice_dcb_ena_dis_vsi.constprop.5+0x29/0x90 [ice]\n[   95.972082]  ice_pf_dcb_cfg+0x29a/0x380 [ice]\n[   95.972154]  ice_dcbnl_setets+0x174/0x1b0 [ice]\n[   95.972220]  dcbnl_ieee_set+0x89/0x230\n[   95.972279]  ? dcbnl_ieee_del+0x150/0x150\n[   95.972341]  dcb_doit+0x124/0x1b0\n[   95.972392]  rtnetlink_rcv_msg+0x243/0x2f0\n[   95.972457]  ? dcb_doit+0x14d/0x1b0\n[   95.972510]  ? __kmalloc_node_track_caller+0x1d3/0x280\n[   95.972591]  ? rtnl_calcit.isra.31+0x100/0x100\n[   95.972661]  netlink_rcv_skb+0xcf/0xf0\n[   95.972720]  netlink_unicast+0x16d/0x220\n[   95.972781]  netlink_sendmsg+0x2ba/0x3a0\n[   95.975891]  sock_sendmsg+0x4c/0x50\n[   95.979032]  ___sys_sendmsg+0x2e4/0x300\n[   95.982147]  ? kmem_cache_alloc+0x13e/0x190\n[   95.985242]  ? __wake_up_common_lock+0x79/0x90\n[   95.988338]  ? __check_object_size+0xac/0x1b0\n[   95.991440]  ? _copy_to_user+0x22/0x30\n[   95.994539]  ? move_addr_to_user+0xbb/0xd0\n[   95.997619]  ? __sys_sendmsg+0x53/0x80\n[   96.000664]  __sys_sendmsg+0x53/0x80\n[   96.003747]  do_syscall_64+0x5b/0x1d0\n[   96.006862]  entry_SYSCALL_64_after_hwframe+0x65/0xca\n\nOnly update num_txq/rxq when passed check, and restore tc_cfg if setup\nqueue map failed."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries/vas: Add close() callback in vas_vm_ops struct\n\nThe mapping VMA address is saved in VAS window struct when the\npaste address is mapped. This VMA address is used during migration\nto unmap the paste address if the window is active. The paste\naddress mapping will be removed when the window is closed or with\nthe munmap(). But the VMA address in the VAS window is not updated\nwith munmap() which is causing invalid access during migration.\n\nThe KASAN report shows:\n[16386.254991] BUG: KASAN: slab-use-after-free in reconfig_close_windows+0x1a0/0x4e8\n[16386.255043] Read of size 8 at addr c00000014a819670 by task drmgr/696928\n\n[16386.255096] CPU: 29 UID: 0 PID: 696928 Comm: drmgr Kdump: loaded Tainted: G    B              6.11.0-rc5-nxgzip #2\n[16386.255128] Tainted: [B]=BAD_PAGE\n[16386.255148] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.00 (NH1110_016) hv:phyp pSeries\n[16386.255181] Call Trace:\n[16386.255202] [c00000016b297660] [c0000000018ad0ac] dump_stack_lvl+0x84/0xe8 (unreliable)\n[16386.255246] [c00000016b297690] [c0000000006e8a90] print_report+0x19c/0x764\n[16386.255285] [c00000016b297760] [c0000000006e9490] kasan_report+0x128/0x1f8\n[16386.255309] [c00000016b297880] [c0000000006eb5c8] __asan_load8+0xac/0xe0\n[16386.255326] [c00000016b2978a0] [c00000000013f898] reconfig_close_windows+0x1a0/0x4e8\n[16386.255343] [c00000016b297990] [c000000000140e58] vas_migration_handler+0x3a4/0x3fc\n[16386.255368] [c00000016b297a90] [c000000000128848] pseries_migrate_partition+0x4c/0x4c4\n...\n\n[16386.256136] Allocated by task 696554 on cpu 31 at 16377.277618s:\n[16386.256149]  kasan_save_stack+0x34/0x68\n[16386.256163]  kasan_save_track+0x34/0x80\n[16386.256175]  kasan_save_alloc_info+0x58/0x74\n[16386.256196]  __kasan_slab_alloc+0xb8/0xdc\n[16386.256209]  kmem_cache_alloc_noprof+0x200/0x3d0\n[16386.256225]  vm_area_alloc+0x44/0x150\n[16386.256245]  mmap_region+0x214/0x10c4\n[16386.256265]  do_mmap+0x5fc/0x750\n[16386.256277]  vm_mmap_pgoff+0x14c/0x24c\n[16386.256292]  ksys_mmap_pgoff+0x20c/0x348\n[16386.256303]  sys_mmap+0xd0/0x160\n...\n\n[16386.256350] Freed by task 0 on cpu 31 at 16386.204848s:\n[16386.256363]  kasan_save_stack+0x34/0x68\n[16386.256374]  kasan_save_track+0x34/0x80\n[16386.256384]  kasan_save_free_info+0x64/0x10c\n[16386.256396]  __kasan_slab_free+0x120/0x204\n[16386.256415]  kmem_cache_free+0x128/0x450\n[16386.256428]  vm_area_free_rcu_cb+0xa8/0xd8\n[16386.256441]  rcu_do_batch+0x2c8/0xcf0\n[16386.256458]  rcu_core+0x378/0x3c4\n[16386.256473]  handle_softirqs+0x20c/0x60c\n[16386.256495]  do_softirq_own_stack+0x6c/0x88\n[16386.256509]  do_softirq_own_stack+0x58/0x88\n[16386.256521]  __irq_exit_rcu+0x1a4/0x20c\n[16386.256533]  irq_exit+0x20/0x38\n[16386.256544]  interrupt_async_exit_prepare.constprop.0+0x18/0x2c\n...\n\n[16386.256717] Last potentially related work creation:\n[16386.256729]  kasan_save_stack+0x34/0x68\n[16386.256741]  __kasan_record_aux_stack+0xcc/0x12c\n[16386.256753]  __call_rcu_common.constprop.0+0x94/0xd04\n[16386.256766]  vm_area_free+0x28/0x3c\n[16386.256778]  remove_vma+0xf4/0x114\n[16386.256797]  do_vmi_align_munmap.constprop.0+0x684/0x870\n[16386.256811]  __vm_munmap+0xe0/0x1f8\n[16386.256821]  sys_munmap+0x54/0x6c\n[16386.256830]  system_call_exception+0x1a0/0x4a0\n[16386.256841]  system_call_vectored_common+0x15c/0x2ec\n\n[16386.256868] The buggy address belongs to the object at c00000014a819670\n                which belongs to the cache vm_area_struct of size 168\n[16386.256887] The buggy address is located 0 bytes inside of\n                freed 168-byte region [c00000014a819670, c00000014a819718)\n\n[16386.256915] The buggy address belongs to the physical page:\n[16386.256928] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a81\n[16386.256950] memcg:c0000000ba430001\n[16386.256961] anon flags: 0x43ffff800000000(node=4|zone=0|lastcpupid=0x7ffff)\n[16386.256975] page_type: 0xfdffffff(slab)\n[16386\n---truncated---"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: musb: Fix hardware lockup on first Rx endpoint request\n\nThere is a possibility that a request\u0027s callback could be invoked from\nusb_ep_queue() (call trace below, supplemented with missing calls):\n\nreq-\u003ecomplete from usb_gadget_giveback_request\n\t(drivers/usb/gadget/udc/core.c:999)\nusb_gadget_giveback_request from musb_g_giveback\n\t(drivers/usb/musb/musb_gadget.c:147)\nmusb_g_giveback from rxstate\n\t(drivers/usb/musb/musb_gadget.c:784)\nrxstate from musb_ep_restart\n\t(drivers/usb/musb/musb_gadget.c:1169)\nmusb_ep_restart from musb_ep_restart_resume_work\n\t(drivers/usb/musb/musb_gadget.c:1176)\nmusb_ep_restart_resume_work from musb_queue_resume_work\n\t(drivers/usb/musb/musb_core.c:2279)\nmusb_queue_resume_work from musb_gadget_queue\n\t(drivers/usb/musb/musb_gadget.c:1241)\nmusb_gadget_queue from usb_ep_queue\n\t(drivers/usb/gadget/udc/core.c:300)\n\nAccording to the docstring of usb_ep_queue(), this should not happen:\n\n\"Note that @req\u0027s -\u003ecomplete() callback must never be called from within\nusb_ep_queue() as that can create deadlock situations.\"\n\nIn fact, a hardware lockup might occur in the following sequence:\n\n1. The gadget is initialized using musb_gadget_enable().\n2. Meanwhile, a packet arrives, and the RXPKTRDY flag is set, raising an\n   interrupt.\n3. If IRQs are enabled, the interrupt is handled, but musb_g_rx() finds an\n   empty queue (next_request() returns NULL). The interrupt flag has\n   already been cleared by the glue layer handler, but the RXPKTRDY flag\n   remains set.\n4. The first request is enqueued using usb_ep_queue(), leading to the call\n   of req-\u003ecomplete(), as shown in the call trace above.\n5. If the callback enables IRQs and another packet is waiting, step (3)\n   repeats. The request queue is empty because usb_g_giveback() removes the\n   request before invoking the callback.\n6. The endpoint remains locked up, as the interrupt triggered by hardware\n   setting the RXPKTRDY flag has been handled, but the flag itself remains\n   set.\n\nFor this scenario to occur, it is only necessary for IRQs to be enabled at\nsome point during the complete callback. This happens with the USB Ethernet\ngadget, whose rx_complete() callback calls netif_rx(). If called in the\ntask context, netif_rx() disables the bottom halves (BHs). When the BHs are\nre-enabled, IRQs are also enabled to allow soft IRQs to be processed. The\ngadget itself is initialized at module load (or at boot if built-in), but\nthe first request is enqueued when the network interface is brought up,\ntriggering rx_complete() in the task context via ioctl(). If a packet\narrives while the interface is down, it can prevent the interface from\nreceiving any further packets from the USB host.\n\nThe situation is quite complicated with many parties involved. This\nparticular issue can be resolved in several possible ways:\n\n1. Ensure that callbacks never enable IRQs. This would be difficult to\n   enforce, as discovering how netif_rx() interacts with interrupts was\n   already quite challenging and u_ether is not the only function driver.\n   Similar \"bugs\" could be hidden in other drivers as well.\n2. Disable MUSB interrupts in musb_g_giveback() before calling the callback\n   and re-enable them afterwars (by calling musb_{dis,en}able_interrupts(),\n   for example). This would ensure that MUSB interrupts are not handled\n   during the callback, even if IRQs are enabled. In fact, it would allow\n   IRQs to be enabled when releasing the lock. However, this feels like an\n   inelegant hack.\n3. Modify the interrupt handler to clear the RXPKTRDY flag if the request\n   queue is empty. While this approach also feels like a hack, it wastes\n   CPU time by attempting to handle incoming packets when the software is\n   not ready to process them.\n4. Flush the Rx FIFO instead of calling rxstate() in musb_ep_restart().\n   This ensures that the hardware can receive packets when there is at\n   least one request in the queue. Once I\n---truncated---"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/c749500b28cae67410792096133ee7f282439c51"
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          "url": "https://git.kernel.org/stable/c/5906ee3693674d734177df13a519a21bb03f730d"
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          "url": "https://git.kernel.org/stable/c/f05ad9755bb294328c3d0f429164ac6d4d08c548"
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          "url": "https://git.kernel.org/stable/c/3fc137386c4620305bbc2a216868c53f9245670a"
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      "title": "usb: musb: Fix hardware lockup on first Rx endpoint request",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56687",
    "datePublished": "2024-12-28T09:46:14.197Z",
    "dateReserved": "2024-12-27T15:00:39.847Z",
    "dateUpdated": "2026-05-11T20:57:18.415Z",
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              "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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              "content": {
                "id": "CVE-2024-56606",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
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                "role": "CISA Coordinator",
                "timestamp": "2025-02-11T15:42:04.007778Z",
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            "descriptions": [
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                "description": "CWE-416 Use After Free",
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                "type": "CWE"
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            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
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          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
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        ],
        "title": "CVE Program Container"
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    ],
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      "affected": [
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          "product": "Linux",
          "programFiles": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "vendor": "Linux",
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              "version": "0",
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              "status": "unaffected",
              "version": "6.12.5",
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              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
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              "lang": "en",
              "value": "AV:L - The vulnerability is reached purely through the local `socket(AF_PACKET, ...)` syscall path (`__sys_socket` \u2192 `__sock_create` \u2192 `packet_create`); no network packet or remote peer is involved in triggering it.\nAC:L - The attacker controls both preconditions \u2014 they can exhaust percpu/slab memory themselves (mass socket and BPF-map allocation, netns churn) and retry the cheap `socket()` call in an unbounded loop until `alloc_percpu()` fails, and can heap-spray the generic kmalloc cache to reclaim the freed `packet_sock`.\nPR:L - The only gate is `ns_capable(net-\u003euser_ns, CAP_NET_RAW)` at af_packet.c:3394, which any unprivileged user satisfies inside a user+network namespace (`unshare -Urn`), and which containers hold by default.\nUI:N - The attacker triggers the entire sequence from their own process via repeated `socket()` calls; no action by any other user or administrator is required.\nS:U - The dangling pointer, the freed object, and the resulting corruption are all within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The use-after-free reads freed slab memory (`atomic64_read(\u0026sk-\u003esk_cookie)` in `__sock_gen_cookie()`), and since `packet_sock` comes from a generic kmalloc cache the attacker can reclaim the object with sprayed content, turning this into a controllable kernel memory disclosure primitive.\nI:H - `__sock_gen_cookie()` performs an `atomic64_cmpxchg()` on the freed object \u2014 an 8-byte write into attacker-reclaimed slab memory at a controlled offset, which is a classic stepping stone to control-flow hijack and privilege escalation.\nA:H - Dereferencing the dangling `sock-\u003esk` after `sk_free()` corrupts freed slab memory and reliably produces a KASAN splat, oops, or panic, as shown in the reference report for this bug class."
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      "references": [
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          "url": "https://git.kernel.org/stable/c/1dc1e1db927056cb323296e2294a855cd003dfe7"
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