CVE-2024-26625 (GCVE-0-2024-26625)

Vulnerability from cvelistv5 – Published: 2024-03-06 06:45 – Updated: 2026-08-05 11:26
VLAI
Title
llc: call sock_orphan() at release time
Summary
In the Linux kernel, the following vulnerability has been resolved: llc: call sock_orphan() at release time syzbot reported an interesting trace [1] caused by a stale sk->sk_wq pointer in a closed llc socket. In commit ff7b11aa481f ("net: socket: set sock->sk to NULL after calling proto_ops::release()") Eric Biggers hinted that some protocols are missing a sock_orphan(), we need to perform a full audit. In net-next, I plan to clear sock->sk from sock_orphan() and amend Eric patch to add a warning. [1] BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:373 [inline] BUG: KASAN: slab-use-after-free in waitqueue_active include/linux/wait.h:127 [inline] BUG: KASAN: slab-use-after-free in sock_def_write_space_wfree net/core/sock.c:3384 [inline] BUG: KASAN: slab-use-after-free in sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468 Read of size 8 at addr ffff88802f4fc880 by task ksoftirqd/1/27 CPU: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 list_empty include/linux/list.h:373 [inline] waitqueue_active include/linux/wait.h:127 [inline] sock_def_write_space_wfree net/core/sock.c:3384 [inline] sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468 skb_release_head_state+0xa3/0x2b0 net/core/skbuff.c:1080 skb_release_all net/core/skbuff.c:1092 [inline] napi_consume_skb+0x119/0x2b0 net/core/skbuff.c:1404 e1000_unmap_and_free_tx_resource+0x144/0x200 drivers/net/ethernet/intel/e1000/e1000_main.c:1970 e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3860 [inline] e1000_clean+0x4a1/0x26e0 drivers/net/ethernet/intel/e1000/e1000_main.c:3801 __napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6576 napi_poll net/core/dev.c:6645 [inline] net_rx_action+0x956/0xe90 net/core/dev.c:6778 __do_softirq+0x21a/0x8de kernel/softirq.c:553 run_ksoftirqd kernel/softirq.c:921 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:913 smpboot_thread_fn+0x660/0xa10 kernel/smpboot.c:164 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 </TASK> Allocated by task 5167: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:314 [inline] __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:340 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3813 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc_lru+0x142/0x6f0 mm/slub.c:3879 alloc_inode_sb include/linux/fs.h:3019 [inline] sock_alloc_inode+0x25/0x1c0 net/socket.c:308 alloc_inode+0x5d/0x220 fs/inode.c:260 new_inode_pseudo+0x16/0x80 fs/inode.c:1005 sock_alloc+0x40/0x270 net/socket.c:634 __sock_create+0xbc/0x800 net/socket.c:1535 sock_create net/socket.c:1622 [inline] __sys_socket_create net/socket.c:1659 [inline] __sys_socket+0x14c/0x260 net/socket.c:1706 __do_sys_socket net/socket.c:1720 [inline] __se_sys_socket net/socket.c:1718 [inline] __x64_sys_socket+0x72/0xb0 net/socket.c:1718 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Freed by task 0: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x121/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inlin ---truncated---
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-06 16:41 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 43815482370c510c569fd18edb57afcb0fa8cab6 , < 6b950c712a9a05cdda4aea7fcb2848766576c11b (git)
Affected: 43815482370c510c569fd18edb57afcb0fa8cab6 , < 64babb17e8150771c58575d8f93a35c5296b499f (git)
Affected: 43815482370c510c569fd18edb57afcb0fa8cab6 , < d0b5b1f12429df3cd9751ab8b2f53729b77733b7 (git)
Affected: 43815482370c510c569fd18edb57afcb0fa8cab6 , < dbc1b89981f9c5360277071d33d7f04a43ffda4a (git)
Affected: 43815482370c510c569fd18edb57afcb0fa8cab6 , < 9c333d9891f34cea8af1b229dc754552304c8eee (git)
Affected: 43815482370c510c569fd18edb57afcb0fa8cab6 , < 3151051b787f7cd7e3329ea0016eb9113c248812 (git)
Affected: 43815482370c510c569fd18edb57afcb0fa8cab6 , < 8e51f084b5716653f19e291ed5f026791d4b3ed4 (git)
Affected: 43815482370c510c569fd18edb57afcb0fa8cab6 , < aa2b2eb3934859904c287bf5434647ba72e14c1c (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.35
Unaffected: 0 , < 2.6.35 (semver)
Unaffected: 4.19.307 , ≤ 4.19.* (semver)
Unaffected: 5.4.269 , ≤ 5.4.* (semver)
Unaffected: 5.10.210 , ≤ 5.10.* (semver)
Unaffected: 5.15.149 , ≤ 5.15.* (semver)
Unaffected: 6.1.77 , ≤ 6.1.* (semver)
Unaffected: 6.6.16 , ≤ 6.6.* (semver)
Unaffected: 6.7.4 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nllc: call sock_orphan() at release time\n\nsyzbot reported an interesting trace [1] caused by a stale sk-\u003esk_wq\npointer in a closed llc socket.\n\nIn commit ff7b11aa481f (\"net: socket: set sock-\u003esk to NULL after\ncalling proto_ops::release()\") Eric Biggers hinted that some protocols\nare missing a sock_orphan(), we need to perform a full audit.\n\nIn net-next, I plan to clear sock-\u003esk from sock_orphan() and\namend Eric patch to add a warning.\n\n[1]\n BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:373 [inline]\n BUG: KASAN: slab-use-after-free in waitqueue_active include/linux/wait.h:127 [inline]\n BUG: KASAN: slab-use-after-free in sock_def_write_space_wfree net/core/sock.c:3384 [inline]\n BUG: KASAN: slab-use-after-free in sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468\nRead of size 8 at addr ffff88802f4fc880 by task ksoftirqd/1/27\n\nCPU: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106\n  print_address_description mm/kasan/report.c:377 [inline]\n  print_report+0xc4/0x620 mm/kasan/report.c:488\n  kasan_report+0xda/0x110 mm/kasan/report.c:601\n  list_empty include/linux/list.h:373 [inline]\n  waitqueue_active include/linux/wait.h:127 [inline]\n  sock_def_write_space_wfree net/core/sock.c:3384 [inline]\n  sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468\n  skb_release_head_state+0xa3/0x2b0 net/core/skbuff.c:1080\n  skb_release_all net/core/skbuff.c:1092 [inline]\n  napi_consume_skb+0x119/0x2b0 net/core/skbuff.c:1404\n  e1000_unmap_and_free_tx_resource+0x144/0x200 drivers/net/ethernet/intel/e1000/e1000_main.c:1970\n  e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3860 [inline]\n  e1000_clean+0x4a1/0x26e0 drivers/net/ethernet/intel/e1000/e1000_main.c:3801\n  __napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6576\n  napi_poll net/core/dev.c:6645 [inline]\n  net_rx_action+0x956/0xe90 net/core/dev.c:6778\n  __do_softirq+0x21a/0x8de kernel/softirq.c:553\n  run_ksoftirqd kernel/softirq.c:921 [inline]\n  run_ksoftirqd+0x31/0x60 kernel/softirq.c:913\n  smpboot_thread_fn+0x660/0xa10 kernel/smpboot.c:164\n  kthread+0x2c6/0x3a0 kernel/kthread.c:388\n  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147\n  ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242\n \u003c/TASK\u003e\n\nAllocated by task 5167:\n  kasan_save_stack+0x33/0x50 mm/kasan/common.c:47\n  kasan_save_track+0x14/0x30 mm/kasan/common.c:68\n  unpoison_slab_object mm/kasan/common.c:314 [inline]\n  __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:340\n  kasan_slab_alloc include/linux/kasan.h:201 [inline]\n  slab_post_alloc_hook mm/slub.c:3813 [inline]\n  slab_alloc_node mm/slub.c:3860 [inline]\n  kmem_cache_alloc_lru+0x142/0x6f0 mm/slub.c:3879\n  alloc_inode_sb include/linux/fs.h:3019 [inline]\n  sock_alloc_inode+0x25/0x1c0 net/socket.c:308\n  alloc_inode+0x5d/0x220 fs/inode.c:260\n  new_inode_pseudo+0x16/0x80 fs/inode.c:1005\n  sock_alloc+0x40/0x270 net/socket.c:634\n  __sock_create+0xbc/0x800 net/socket.c:1535\n  sock_create net/socket.c:1622 [inline]\n  __sys_socket_create net/socket.c:1659 [inline]\n  __sys_socket+0x14c/0x260 net/socket.c:1706\n  __do_sys_socket net/socket.c:1720 [inline]\n  __se_sys_socket net/socket.c:1718 [inline]\n  __x64_sys_socket+0x72/0xb0 net/socket.c:1718\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nFreed by task 0:\n  kasan_save_stack+0x33/0x50 mm/kasan/common.c:47\n  kasan_save_track+0x14/0x30 mm/kasan/common.c:68\n  kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640\n  poison_slab_object mm/kasan/common.c:241 [inline]\n  __kasan_slab_free+0x121/0x1b0 mm/kasan/common.c:257\n  kasan_slab_free include/linux/kasan.h:184 [inline]\n  slab_free_hook mm/slub.c:2121 [inlin\n---truncated---"
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              "value": "AV:L - The bug is triggered entirely through local syscalls \u2014 socket(AF_LLC), bind/connect, sendmsg, then close \u2014 and the UAF fires on local TX completion in softirq. No remote peer input is required or sufficient to reach it.\nAC:L - The attacker controls both sides of the window: queue skbs to a device (filling the qdisc/TX ring or using a stalled link) and then immediately close the socket, so the inode is RCU-freed while sk_wq still points into it. The syzbot reproducer triggers this reliably with no attacker-uncontrollable precondition.\nPR:L - Creating an AF_LLC socket needs CAP_NET_RAW in the initial user namespace (the net_eq(\u0026init_net) check blocks the unshare -Urn path), but CAP_NET_RAW is a narrow, commonly delegated privilege \u2014 not administrative control over the kernel \u2014 and is held by default in host-network containers and by ordinary network daemons/setcap\u0027d tools.\nUI:N - The attacking process performs every step itself; no victim action, mount, or file open is involved.\nS:U - The corruption stays within the kernel\u0027s own security authority \u2014 a standard local privilege-escalation/crash primitive, with no VM, IOMMU, or sandbox boundary crossed.\nC:H - sock_def_write_space_wfree() reads a freed sock_inode_cache object, and the follow-on wake_up/kill_fasync paths dereference pointers taken from that freed memory, giving an attacker who grooms the slab an arbitrary-read primitive.\nI:H - Waking a wait queue in freed memory calls curr-\u003efunc() through an attacker-influenceable function pointer and performs list_del writes, and the uncleared SOCK_FASYNC path walks a freed fasync chain \u2014 both are usable for control-flow hijack or arbitrary write.\nA:H - The KASAN-confirmed slab-use-after-free occurs in softirq context during NAPI TX cleanup, producing an oops or panic that takes down the whole system."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:26:21.512Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6b950c712a9a05cdda4aea7fcb2848766576c11b"
        },
        {
          "url": "https://git.kernel.org/stable/c/64babb17e8150771c58575d8f93a35c5296b499f"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0b5b1f12429df3cd9751ab8b2f53729b77733b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/dbc1b89981f9c5360277071d33d7f04a43ffda4a"
        },
        {
          "url": "https://git.kernel.org/stable/c/9c333d9891f34cea8af1b229dc754552304c8eee"
        },
        {
          "url": "https://git.kernel.org/stable/c/3151051b787f7cd7e3329ea0016eb9113c248812"
        },
        {
          "url": "https://git.kernel.org/stable/c/8e51f084b5716653f19e291ed5f026791d4b3ed4"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa2b2eb3934859904c287bf5434647ba72e14c1c"
        }
      ],
      "title": "llc: call sock_orphan() at release time",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26625",
    "datePublished": "2024-03-06T06:45:33.311Z",
    "dateReserved": "2024-02-19T14:20:24.135Z",
    "dateUpdated": "2026-08-05T11:26:21.512Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-26625",
      "date": "2026-08-28",
      "epss": "0.00249",
      "percentile": "0.16023"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26625\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-06T07:15:12.587\",\"lastModified\":\"2026-08-04T11:16:49.980\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nllc: call sock_orphan() at release time\\n\\nsyzbot reported an interesting trace [1] caused by a stale sk-\u003esk_wq\\npointer in a closed llc socket.\\n\\nIn commit ff7b11aa481f (\\\"net: socket: set sock-\u003esk to NULL after\\ncalling proto_ops::release()\\\") Eric Biggers hinted that some protocols\\nare missing a sock_orphan(), we need to perform a full audit.\\n\\nIn net-next, I plan to clear sock-\u003esk from sock_orphan() and\\namend Eric patch to add a warning.\\n\\n[1]\\n BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:373 [inline]\\n BUG: KASAN: slab-use-after-free in waitqueue_active include/linux/wait.h:127 [inline]\\n BUG: KASAN: slab-use-after-free in sock_def_write_space_wfree net/core/sock.c:3384 [inline]\\n BUG: KASAN: slab-use-after-free in sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468\\nRead of size 8 at addr ffff88802f4fc880 by task ksoftirqd/1/27\\n\\nCPU: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n  __dump_stack lib/dump_stack.c:88 [inline]\\n  dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106\\n  print_address_description mm/kasan/report.c:377 [inline]\\n  print_report+0xc4/0x620 mm/kasan/report.c:488\\n  kasan_report+0xda/0x110 mm/kasan/report.c:601\\n  list_empty include/linux/list.h:373 [inline]\\n  waitqueue_active include/linux/wait.h:127 [inline]\\n  sock_def_write_space_wfree net/core/sock.c:3384 [inline]\\n  sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468\\n  skb_release_head_state+0xa3/0x2b0 net/core/skbuff.c:1080\\n  skb_release_all net/core/skbuff.c:1092 [inline]\\n  napi_consume_skb+0x119/0x2b0 net/core/skbuff.c:1404\\n  e1000_unmap_and_free_tx_resource+0x144/0x200 drivers/net/ethernet/intel/e1000/e1000_main.c:1970\\n  e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3860 [inline]\\n  e1000_clean+0x4a1/0x26e0 drivers/net/ethernet/intel/e1000/e1000_main.c:3801\\n  __napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6576\\n  napi_poll net/core/dev.c:6645 [inline]\\n  net_rx_action+0x956/0xe90 net/core/dev.c:6778\\n  __do_softirq+0x21a/0x8de kernel/softirq.c:553\\n  run_ksoftirqd kernel/softirq.c:921 [inline]\\n  run_ksoftirqd+0x31/0x60 kernel/softirq.c:913\\n  smpboot_thread_fn+0x660/0xa10 kernel/smpboot.c:164\\n  kthread+0x2c6/0x3a0 kernel/kthread.c:388\\n  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147\\n  ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242\\n \u003c/TASK\u003e\\n\\nAllocated by task 5167:\\n  kasan_save_stack+0x33/0x50 mm/kasan/common.c:47\\n  kasan_save_track+0x14/0x30 mm/kasan/common.c:68\\n  unpoison_slab_object mm/kasan/common.c:314 [inline]\\n  __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:340\\n  kasan_slab_alloc include/linux/kasan.h:201 [inline]\\n  slab_post_alloc_hook mm/slub.c:3813 [inline]\\n  slab_alloc_node mm/slub.c:3860 [inline]\\n  kmem_cache_alloc_lru+0x142/0x6f0 mm/slub.c:3879\\n  alloc_inode_sb include/linux/fs.h:3019 [inline]\\n  sock_alloc_inode+0x25/0x1c0 net/socket.c:308\\n  alloc_inode+0x5d/0x220 fs/inode.c:260\\n  new_inode_pseudo+0x16/0x80 fs/inode.c:1005\\n  sock_alloc+0x40/0x270 net/socket.c:634\\n  __sock_create+0xbc/0x800 net/socket.c:1535\\n  sock_create net/socket.c:1622 [inline]\\n  __sys_socket_create net/socket.c:1659 [inline]\\n  __sys_socket+0x14c/0x260 net/socket.c:1706\\n  __do_sys_socket net/socket.c:1720 [inline]\\n  __se_sys_socket net/socket.c:1718 [inline]\\n  __x64_sys_socket+0x72/0xb0 net/socket.c:1718\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\\n\\nFreed by task 0:\\n  kasan_save_stack+0x33/0x50 mm/kasan/common.c:47\\n  kasan_save_track+0x14/0x30 mm/kasan/common.c:68\\n  kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640\\n  poison_slab_object mm/kasan/common.c:241 [inline]\\n  __kasan_slab_free+0x121/0x1b0 mm/kasan/common.c:257\\n  kasan_slab_free include/linux/kasan.h:184 [inline]\\n  slab_free_hook mm/slub.c:2121 [inlin\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: llc: llame a sock_orphan() en el momento del lanzamiento syzbot inform\u00f3 un rastro interesante [1] causado por un puntero sk-\u0026gt;sk_wq obsoleto en un socket llc cerrado. En El commit ff7b11aa481f (\\\"net: socket: set sock-\u0026gt;sk to NULL after call proto_ops::release()\\\") Eric Biggers insinu\u00f3 que a algunos protocolos les falta un sock_orphan(), necesitamos realizar una auditor\u00eda completa. En net-next, planeo borrar sock-\u0026gt;sk de sock_orphan() y modificar el parche de Eric para agregar una advertencia. [1] ERROR: KASAN: slab-use-after-free en list_empty include/linux/list.h:373 [en l\u00ednea] ERROR: KASAN: slab-use-after-free en waitqueue_active include/linux/wait.h:127 [en l\u00ednea] ERROR: KASAN: slab-use-after-free en sock_def_write_space_wfree net/core/sock.c:3384 [en l\u00ednea] ERROR: KASAN: slab-use-after-free en sock_wfree+0x9a8/0x9d0 net/core/sock .c:2468 Lectura del tama\u00f1o 8 en la direcci\u00f3n ffff88802f4fc880 por tarea ksoftirqd/1/27 CPU: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0 Nombre de hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 01/04/2014 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack .c:106 print_address_description mm/kasan/report.c:377 [en l\u00ednea] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 list_empty include/linux/ list.h:373 [en l\u00ednea] waitqueue_active include/linux/wait.h:127 [en l\u00ednea] sock_def_write_space_wfree net/core/sock.c:3384 [en l\u00ednea] sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468 skb_release_head_state+ 0xa3/0x2b0 net/core/skbuff.c:1080 skb_release_all net/core/skbuff.c:1092 [en l\u00ednea] napi_consume_skb+0x119/0x2b0 net/core/skbuff.c:1404 e1000_unmap_and_free_tx_resource+0x144/0x200 drivers/net/ethernet/ intel/e1000/e1000_main.c:1970 e1000_clean_tx_irq controladores/net/ethernet/intel/e1000/e1000_main.c:3860 [en l\u00ednea] e1000_clean+0x4a1/0x26e0 controladores/net/ethernet/intel/e1000/e1000_main.c:3801 __ napi_poll. constprop.0+0xb4/0x540 net/core/dev.c:6576 napi_poll net/core/dev.c:6645 [en l\u00ednea] net_rx_action+0x956/0xe90 net/core/dev.c:6778 __do_softirq+0x21a/0x8de kernel/ softirq.c:553 run_ksoftirqd kernel/softirq.c:921 [en l\u00ednea] run_ksoftirqd+0x31/0x60 kernel/softirq.c:913 smpboot_thread_fn+0x660/0xa10 kernel/smpboot.c:164 kthread+0x2c6/0x3a0 kernel/kthread.c :388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242  Asignado por tarea 5167: kasan_save_stack+0x33/0x50 mm/ kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:314 [en l\u00ednea] __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:340 kasan_slab_alloc incluir /linux/kasan.h:201 [en l\u00ednea] slab_post_alloc_hook mm/slub.c:3813 [en l\u00ednea] slab_alloc_node mm/slub.c:3860 [en l\u00ednea] kmem_cache_alloc_lru+0x142/0x6f0 mm/slub.c:3879 alloc_inode_sb include/linux/ fs.h:3019 [en l\u00ednea] sock_alloc_inode+0x25/0x1c0 net/socket.c:308 alloc_inode+0x5d/0x220 fs/inode.c:260 new_inode_pseudo+0x16/0x80 fs/inode.c:1005 sock_alloc+0x40/0x270 net /socket.c:634 __sock_create+0xbc/0x800 net/socket.c:1535 sock_create net/socket.c:1622 [en l\u00ednea] __sys_socket_create net/socket.c:1659 [en l\u00ednea] __sys_socket+0x14c/0x260 net/socket.c :1706 __do_sys_socket net/socket.c:1720 [en l\u00ednea] __se_sys_socket net/socket.c:1718 [en l\u00ednea] __x64_sys_socket+0x72/0xb0 net/socket.c:1718 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea ] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b Liberado por la tarea 0: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/ common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 veneno_slab_object mm/kasan/common.c:241 [en l\u00ednea] __kasan_slab_free+0x121/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux /kasan.h:184 [en l\u00ednea] slab_free_hook mm/slub.c:2121 [en l\u00ednea ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/llc/af_llc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"43815482370c510c569fd18edb57afcb0fa8cab6\",\"lessThan\":\"6b950c712a9a05cdda4aea7fcb2848766576c11b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43815482370c510c569fd18edb57afcb0fa8cab6\",\"lessThan\":\"64babb17e8150771c58575d8f93a35c5296b499f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43815482370c510c569fd18edb57afcb0fa8cab6\",\"lessThan\":\"d0b5b1f12429df3cd9751ab8b2f53729b77733b7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43815482370c510c569fd18edb57afcb0fa8cab6\",\"lessThan\":\"dbc1b89981f9c5360277071d33d7f04a43ffda4a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43815482370c510c569fd18edb57afcb0fa8cab6\",\"lessThan\":\"9c333d9891f34cea8af1b229dc754552304c8eee\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43815482370c510c569fd18edb57afcb0fa8cab6\",\"lessThan\":\"3151051b787f7cd7e3329ea0016eb9113c248812\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43815482370c510c569fd18edb57afcb0fa8cab6\",\"lessThan\":\"8e51f084b5716653f19e291ed5f026791d4b3ed4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43815482370c510c569fd18edb57afcb0fa8cab6\",\"lessThan\":\"aa2b2eb3934859904c287bf5434647ba72e14c1c\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/llc/af_llc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.35\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.35\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.307\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.269\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.210\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.149\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.77\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.16\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.7.4\",\"lessThanOrEqual\":\"6.7.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-03-06T16:41:05.994976Z\",\"id\":\"CVE-2024-26625\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:12:06+00:00",
      "cve": "CVE-2024-26625",
      "id": "CVE-2024-26625",
      "initial_release_date": "2024-03-06T00:00:00+00:00",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "156",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: llc: call sock_orphan() at release time",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26625.json",
      "version": "3"
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\"version\": \"6.6.16\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/llc/af_llc.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/6b950c712a9a05cdda4aea7fcb2848766576c11b\"}, {\"url\": \"https://git.kernel.org/stable/c/64babb17e8150771c58575d8f93a35c5296b499f\"}, {\"url\": \"https://git.kernel.org/stable/c/d0b5b1f12429df3cd9751ab8b2f53729b77733b7\"}, {\"url\": \"https://git.kernel.org/stable/c/dbc1b89981f9c5360277071d33d7f04a43ffda4a\"}, {\"url\": \"https://git.kernel.org/stable/c/9c333d9891f34cea8af1b229dc754552304c8eee\"}, {\"url\": \"https://git.kernel.org/stable/c/3151051b787f7cd7e3329ea0016eb9113c248812\"}, {\"url\": \"https://git.kernel.org/stable/c/8e51f084b5716653f19e291ed5f026791d4b3ed4\"}, {\"url\": \"https://git.kernel.org/stable/c/aa2b2eb3934859904c287bf5434647ba72e14c1c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nllc: call sock_orphan() at release time\\n\\nsyzbot reported an interesting trace [1] caused by a stale sk-\u003esk_wq\\npointer in a closed llc socket.\\n\\nIn commit ff7b11aa481f (\\\"net: socket: set sock-\u003esk to NULL after\\ncalling proto_ops::release()\\\") Eric Biggers hinted that some protocols\\nare missing a sock_orphan(), we need to perform a full audit.\\n\\nIn net-next, I plan to clear sock-\u003esk from sock_orphan() and\\namend Eric patch to add a warning.\\n\\n[1]\\n BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:373 [inline]\\n BUG: KASAN: slab-use-after-free in waitqueue_active include/linux/wait.h:127 [inline]\\n BUG: KASAN: slab-use-after-free in sock_def_write_space_wfree net/core/sock.c:3384 [inline]\\n BUG: KASAN: slab-use-after-free in sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468\\nRead of size 8 at addr ffff88802f4fc880 by task ksoftirqd/1/27\\n\\nCPU: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n  __dump_stack lib/dump_stack.c:88 [inline]\\n  dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106\\n  print_address_description mm/kasan/report.c:377 [inline]\\n  print_report+0xc4/0x620 mm/kasan/report.c:488\\n  kasan_report+0xda/0x110 mm/kasan/report.c:601\\n  list_empty include/linux/list.h:373 [inline]\\n  waitqueue_active include/linux/wait.h:127 [inline]\\n  sock_def_write_space_wfree net/core/sock.c:3384 [inline]\\n  sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468\\n  skb_release_head_state+0xa3/0x2b0 net/core/skbuff.c:1080\\n  skb_release_all net/core/skbuff.c:1092 [inline]\\n  napi_consume_skb+0x119/0x2b0 net/core/skbuff.c:1404\\n  e1000_unmap_and_free_tx_resource+0x144/0x200 drivers/net/ethernet/intel/e1000/e1000_main.c:1970\\n  e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3860 [inline]\\n  e1000_clean+0x4a1/0x26e0 drivers/net/ethernet/intel/e1000/e1000_main.c:3801\\n  __napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6576\\n  napi_poll net/core/dev.c:6645 [inline]\\n  net_rx_action+0x956/0xe90 net/core/dev.c:6778\\n  __do_softirq+0x21a/0x8de kernel/softirq.c:553\\n  run_ksoftirqd kernel/softirq.c:921 [inline]\\n  run_ksoftirqd+0x31/0x60 kernel/softirq.c:913\\n  smpboot_thread_fn+0x660/0xa10 kernel/smpboot.c:164\\n  kthread+0x2c6/0x3a0 kernel/kthread.c:388\\n  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147\\n  ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242\\n \u003c/TASK\u003e\\n\\nAllocated by task 5167:\\n  kasan_save_stack+0x33/0x50 mm/kasan/common.c:47\\n  kasan_save_track+0x14/0x30 mm/kasan/common.c:68\\n  unpoison_slab_object mm/kasan/common.c:314 [inline]\\n  __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:340\\n  kasan_slab_alloc include/linux/kasan.h:201 [inline]\\n  slab_post_alloc_hook mm/slub.c:3813 [inline]\\n  slab_alloc_node mm/slub.c:3860 [inline]\\n  kmem_cache_alloc_lru+0x142/0x6f0 mm/slub.c:3879\\n  alloc_inode_sb include/linux/fs.h:3019 [inline]\\n  sock_alloc_inode+0x25/0x1c0 net/socket.c:308\\n  alloc_inode+0x5d/0x220 fs/inode.c:260\\n  new_inode_pseudo+0x16/0x80 fs/inode.c:1005\\n  sock_alloc+0x40/0x270 net/socket.c:634\\n  __sock_create+0xbc/0x800 net/socket.c:1535\\n  sock_create net/socket.c:1622 [inline]\\n  __sys_socket_create net/socket.c:1659 [inline]\\n  __sys_socket+0x14c/0x260 net/socket.c:1706\\n  __do_sys_socket net/socket.c:1720 [inline]\\n  __se_sys_socket net/socket.c:1718 [inline]\\n  __x64_sys_socket+0x72/0xb0 net/socket.c:1718\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\\n\\nFreed by task 0:\\n  kasan_save_stack+0x33/0x50 mm/kasan/common.c:47\\n  kasan_save_track+0x14/0x30 mm/kasan/common.c:68\\n  kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640\\n  poison_slab_object mm/kasan/common.c:241 [inline]\\n  __kasan_slab_free+0x121/0x1b0 mm/kasan/common.c:257\\n  kasan_slab_free include/linux/kasan.h:184 [inline]\\n  slab_free_hook mm/slub.c:2121 [inlin\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.307\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.269\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.210\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.149\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.77\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.16\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.4\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"2.6.35\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:26:21.512Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26625\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:26:21.512Z\", \"dateReserved\": \"2024-02-19T14:20:24.135Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-06T06:45:33.311Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.