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CVE-2026-23167 (GCVE-0-2026-23167)

Vulnerability from cvelistv5 – Published: 2026-02-14 16:01 – Updated: 2026-05-11 22:01
VLAI
Title
nfc: nci: Fix race between rfkill and nci_unregister_device().
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: nci: Fix race between rfkill and nci_unregister_device(). syzbot reported the splat below [0] without a repro. It indicates that struct nci_dev.cmd_wq had been destroyed before nci_close_device() was called via rfkill. nci_dev.cmd_wq is only destroyed in nci_unregister_device(), which (I think) was called from virtual_ncidev_close() when syzbot close()d an fd of virtual_ncidev. The problem is that nci_unregister_device() destroys nci_dev.cmd_wq first and then calls nfc_unregister_device(), which removes the device from rfkill by rfkill_unregister(). So, the device is still visible via rfkill even after nci_dev.cmd_wq is destroyed. Let's unregister the device from rfkill first in nci_unregister_device(). Note that we cannot call nfc_unregister_device() before nci_close_device() because 1) nfc_unregister_device() calls device_del() which frees all memory allocated by devm_kzalloc() and linked to ndev->conn_info_list 2) nci_rx_work() could try to queue nci_conn_info to ndev->conn_info_list which could be leaked Thus, nfc_unregister_device() is split into two functions so we can remove rfkill interfaces only before nci_close_device(). [0]: DEBUG_LOCKS_WARN_ON(1) WARNING: kernel/locking/lockdep.c:238 at hlock_class kernel/locking/lockdep.c:238 [inline], CPU#0: syz.0.8675/6349 WARNING: kernel/locking/lockdep.c:238 at check_wait_context kernel/locking/lockdep.c:4854 [inline], CPU#0: syz.0.8675/6349 WARNING: kernel/locking/lockdep.c:238 at __lock_acquire+0x39d/0x2cf0 kernel/locking/lockdep.c:5187, CPU#0: syz.0.8675/6349 Modules linked in: CPU: 0 UID: 0 PID: 6349 Comm: syz.0.8675 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026 RIP: 0010:hlock_class kernel/locking/lockdep.c:238 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4854 [inline] RIP: 0010:__lock_acquire+0x3a4/0x2cf0 kernel/locking/lockdep.c:5187 Code: 18 00 4c 8b 74 24 08 75 27 90 e8 17 f2 fc 02 85 c0 74 1c 83 3d 50 e0 4e 0e 00 75 13 48 8d 3d 43 f7 51 0e 48 c7 c6 8b 3a de 8d <67> 48 0f b9 3a 90 31 c0 0f b6 98 c4 00 00 00 41 8b 45 20 25 ff 1f RSP: 0018:ffffc9000c767680 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000040000 RCX: 0000000000080000 RDX: ffffc90013080000 RSI: ffffffff8dde3a8b RDI: ffffffff8ff24ca0 RBP: 0000000000000003 R08: ffffffff8fef35a3 R09: 1ffffffff1fde6b4 R10: dffffc0000000000 R11: fffffbfff1fde6b5 R12: 00000000000012a2 R13: ffff888030338ba8 R14: ffff888030338000 R15: ffff888030338b30 FS: 00007fa5995f66c0(0000) GS:ffff8881256f8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7e72f842d0 CR3: 00000000485a0000 CR4: 00000000003526f0 Call Trace: <TASK> lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868 touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3940 __flush_workqueue+0x14b/0x14f0 kernel/workqueue.c:3982 nci_close_device+0x302/0x630 net/nfc/nci/core.c:567 nci_dev_down+0x3b/0x50 net/nfc/nci/core.c:639 nfc_dev_down+0x152/0x290 net/nfc/core.c:161 nfc_rfkill_set_block+0x2d/0x100 net/nfc/core.c:179 rfkill_set_block+0x1d2/0x440 net/rfkill/core.c:346 rfkill_fop_write+0x461/0x5a0 net/rfkill/core.c:1301 vfs_write+0x29a/0xb90 fs/read_write.c:684 ksys_write+0x150/0x270 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa59b39acb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa5995f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fa59b615fa0 RCX: 00007fa59b39acb9 RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000007 RBP: 00007fa59b408bf7 R08: ---truncated---
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < cd4412d5905ee580e96c48360dc98fcd9e6f3208 (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < eaa5da5130deda26420273d4610cf6e4f794ed75 (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < 8ea4d96419fb20f15a52ce657d49f1e7c91eb7ac (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < 546eba0b10989de9ccc7fd619e874a30561e2b88 (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < 126cd30cad37bc7c2c85fe2df2a522d4edf0a5c5 (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < c3369fc5e6120a72169e71acd72e987907a682af (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < d2492688bb9fed6ab6e313682c387ae71a66ebae (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.2
Unaffected: 0 , < 3.2 (semver)
Unaffected: 5.10.249 , ≤ 5.10.* (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.123 , ≤ 6.6.* (semver)
Unaffected: 6.12.69 , ≤ 6.12.* (semver)
Unaffected: 6.18.9 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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              "status": "unaffected",
              "version": "5.15.199",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.123",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.69",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.9",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
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              "version": "6.19",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: Fix race between rfkill and nci_unregister_device().\n\nsyzbot reported the splat below [0] without a repro.\n\nIt indicates that struct nci_dev.cmd_wq had been destroyed before\nnci_close_device() was called via rfkill.\n\nnci_dev.cmd_wq is only destroyed in nci_unregister_device(), which\n(I think) was called from virtual_ncidev_close() when syzbot close()d\nan fd of virtual_ncidev.\n\nThe problem is that nci_unregister_device() destroys nci_dev.cmd_wq\nfirst and then calls nfc_unregister_device(), which removes the\ndevice from rfkill by rfkill_unregister().\n\nSo, the device is still visible via rfkill even after nci_dev.cmd_wq\nis destroyed.\n\nLet\u0027s unregister the device from rfkill first in nci_unregister_device().\n\nNote that we cannot call nfc_unregister_device() before\nnci_close_device() because\n\n  1) nfc_unregister_device() calls device_del() which frees\n     all memory allocated by devm_kzalloc() and linked to\n     ndev-\u003econn_info_list\n\n  2) nci_rx_work() could try to queue nci_conn_info to\n     ndev-\u003econn_info_list which could be leaked\n\nThus, nfc_unregister_device() is split into two functions so we\ncan remove rfkill interfaces only before nci_close_device().\n\n[0]:\nDEBUG_LOCKS_WARN_ON(1)\nWARNING: kernel/locking/lockdep.c:238 at hlock_class kernel/locking/lockdep.c:238 [inline], CPU#0: syz.0.8675/6349\nWARNING: kernel/locking/lockdep.c:238 at check_wait_context kernel/locking/lockdep.c:4854 [inline], CPU#0: syz.0.8675/6349\nWARNING: kernel/locking/lockdep.c:238 at __lock_acquire+0x39d/0x2cf0 kernel/locking/lockdep.c:5187, CPU#0: syz.0.8675/6349\nModules linked in:\nCPU: 0 UID: 0 PID: 6349 Comm: syz.0.8675 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026\nRIP: 0010:hlock_class kernel/locking/lockdep.c:238 [inline]\nRIP: 0010:check_wait_context kernel/locking/lockdep.c:4854 [inline]\nRIP: 0010:__lock_acquire+0x3a4/0x2cf0 kernel/locking/lockdep.c:5187\nCode: 18 00 4c 8b 74 24 08 75 27 90 e8 17 f2 fc 02 85 c0 74 1c 83 3d 50 e0 4e 0e 00 75 13 48 8d 3d 43 f7 51 0e 48 c7 c6 8b 3a de 8d \u003c67\u003e 48 0f b9 3a 90 31 c0 0f b6 98 c4 00 00 00 41 8b 45 20 25 ff 1f\nRSP: 0018:ffffc9000c767680 EFLAGS: 00010046\nRAX: 0000000000000001 RBX: 0000000000040000 RCX: 0000000000080000\nRDX: ffffc90013080000 RSI: ffffffff8dde3a8b RDI: ffffffff8ff24ca0\nRBP: 0000000000000003 R08: ffffffff8fef35a3 R09: 1ffffffff1fde6b4\nR10: dffffc0000000000 R11: fffffbfff1fde6b5 R12: 00000000000012a2\nR13: ffff888030338ba8 R14: ffff888030338000 R15: ffff888030338b30\nFS:  00007fa5995f66c0(0000) GS:ffff8881256f8000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f7e72f842d0 CR3: 00000000485a0000 CR4: 00000000003526f0\nCall Trace:\n \u003cTASK\u003e\n lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868\n touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3940\n __flush_workqueue+0x14b/0x14f0 kernel/workqueue.c:3982\n nci_close_device+0x302/0x630 net/nfc/nci/core.c:567\n nci_dev_down+0x3b/0x50 net/nfc/nci/core.c:639\n nfc_dev_down+0x152/0x290 net/nfc/core.c:161\n nfc_rfkill_set_block+0x2d/0x100 net/nfc/core.c:179\n rfkill_set_block+0x1d2/0x440 net/rfkill/core.c:346\n rfkill_fop_write+0x461/0x5a0 net/rfkill/core.c:1301\n vfs_write+0x29a/0xb90 fs/read_write.c:684\n ksys_write+0x150/0x270 fs/read_write.c:738\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fa59b39acb9\nCode: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007fa5995f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 00007fa59b615fa0 RCX: 00007fa59b39acb9\nRDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000007\nRBP: 00007fa59b408bf7 R08: \n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:01:37.240Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cd4412d5905ee580e96c48360dc98fcd9e6f3208"
        },
        {
          "url": "https://git.kernel.org/stable/c/eaa5da5130deda26420273d4610cf6e4f794ed75"
        },
        {
          "url": "https://git.kernel.org/stable/c/8ea4d96419fb20f15a52ce657d49f1e7c91eb7ac"
        },
        {
          "url": "https://git.kernel.org/stable/c/546eba0b10989de9ccc7fd619e874a30561e2b88"
        },
        {
          "url": "https://git.kernel.org/stable/c/126cd30cad37bc7c2c85fe2df2a522d4edf0a5c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/c3369fc5e6120a72169e71acd72e987907a682af"
        },
        {
          "url": "https://git.kernel.org/stable/c/d2492688bb9fed6ab6e313682c387ae71a66ebae"
        }
      ],
      "title": "nfc: nci: Fix race between rfkill and nci_unregister_device().",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23167",
    "datePublished": "2026-02-14T16:01:30.755Z",
    "dateReserved": "2026-01-13T15:37:45.981Z",
    "dateUpdated": "2026-05-11T22:01:37.240Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-23167",
      "date": "2026-09-16",
      "epss": "0.0009",
      "percentile": "0.00498"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23167\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-14T16:15:56.910\",\"lastModified\":\"2026-06-17T10:21:01.487\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfc: nci: Fix race between rfkill and nci_unregister_device().\\n\\nsyzbot reported the splat below [0] without a repro.\\n\\nIt indicates that struct nci_dev.cmd_wq had been destroyed before\\nnci_close_device() was called via rfkill.\\n\\nnci_dev.cmd_wq is only destroyed in nci_unregister_device(), which\\n(I think) was called from virtual_ncidev_close() when syzbot close()d\\nan fd of virtual_ncidev.\\n\\nThe problem is that nci_unregister_device() destroys nci_dev.cmd_wq\\nfirst and then calls nfc_unregister_device(), which removes the\\ndevice from rfkill by rfkill_unregister().\\n\\nSo, the device is still visible via rfkill even after nci_dev.cmd_wq\\nis destroyed.\\n\\nLet\u0027s unregister the device from rfkill first in nci_unregister_device().\\n\\nNote that we cannot call nfc_unregister_device() before\\nnci_close_device() because\\n\\n  1) nfc_unregister_device() calls device_del() which frees\\n     all memory allocated by devm_kzalloc() and linked to\\n     ndev-\u003econn_info_list\\n\\n  2) nci_rx_work() could try to queue nci_conn_info to\\n     ndev-\u003econn_info_list which could be leaked\\n\\nThus, nfc_unregister_device() is split into two functions so we\\ncan remove rfkill interfaces only before nci_close_device().\\n\\n[0]:\\nDEBUG_LOCKS_WARN_ON(1)\\nWARNING: kernel/locking/lockdep.c:238 at hlock_class kernel/locking/lockdep.c:238 [inline], CPU#0: syz.0.8675/6349\\nWARNING: kernel/locking/lockdep.c:238 at check_wait_context kernel/locking/lockdep.c:4854 [inline], CPU#0: syz.0.8675/6349\\nWARNING: kernel/locking/lockdep.c:238 at __lock_acquire+0x39d/0x2cf0 kernel/locking/lockdep.c:5187, CPU#0: syz.0.8675/6349\\nModules linked in:\\nCPU: 0 UID: 0 PID: 6349 Comm: syz.0.8675 Not tainted syzkaller #0 PREEMPT(full)\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026\\nRIP: 0010:hlock_class kernel/locking/lockdep.c:238 [inline]\\nRIP: 0010:check_wait_context kernel/locking/lockdep.c:4854 [inline]\\nRIP: 0010:__lock_acquire+0x3a4/0x2cf0 kernel/locking/lockdep.c:5187\\nCode: 18 00 4c 8b 74 24 08 75 27 90 e8 17 f2 fc 02 85 c0 74 1c 83 3d 50 e0 4e 0e 00 75 13 48 8d 3d 43 f7 51 0e 48 c7 c6 8b 3a de 8d \u003c67\u003e 48 0f b9 3a 90 31 c0 0f b6 98 c4 00 00 00 41 8b 45 20 25 ff 1f\\nRSP: 0018:ffffc9000c767680 EFLAGS: 00010046\\nRAX: 0000000000000001 RBX: 0000000000040000 RCX: 0000000000080000\\nRDX: ffffc90013080000 RSI: ffffffff8dde3a8b RDI: ffffffff8ff24ca0\\nRBP: 0000000000000003 R08: ffffffff8fef35a3 R09: 1ffffffff1fde6b4\\nR10: dffffc0000000000 R11: fffffbfff1fde6b5 R12: 00000000000012a2\\nR13: ffff888030338ba8 R14: ffff888030338000 R15: ffff888030338b30\\nFS:  00007fa5995f66c0(0000) GS:ffff8881256f8000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f7e72f842d0 CR3: 00000000485a0000 CR4: 00000000003526f0\\nCall Trace:\\n \u003cTASK\u003e\\n lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868\\n touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3940\\n __flush_workqueue+0x14b/0x14f0 kernel/workqueue.c:3982\\n nci_close_device+0x302/0x630 net/nfc/nci/core.c:567\\n nci_dev_down+0x3b/0x50 net/nfc/nci/core.c:639\\n nfc_dev_down+0x152/0x290 net/nfc/core.c:161\\n nfc_rfkill_set_block+0x2d/0x100 net/nfc/core.c:179\\n rfkill_set_block+0x1d2/0x440 net/rfkill/core.c:346\\n rfkill_fop_write+0x461/0x5a0 net/rfkill/core.c:1301\\n vfs_write+0x29a/0xb90 fs/read_write.c:684\\n ksys_write+0x150/0x270 fs/read_write.c:738\\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\\n do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7fa59b39acb9\\nCode: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fa5995f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\\nRAX: ffffffffffffffda RBX: 00007fa59b615fa0 RCX: 00007fa59b39acb9\\nRDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000007\\nRBP: 00007fa59b408bf7 R08: \\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:  nfc: nci: Solucionar condici\u00f3n de carrera entre rfkill y nci_unregister_device().  syzbot inform\u00f3 del \u0027splat\u0027 a continuaci\u00f3n [0] sin una reproducci\u00f3n.  Indica que la estructura nci_dev.cmd_wq hab\u00eda sido destruida antes de que se llamara a nci_close_device() a trav\u00e9s de rfkill.  nci_dev.cmd_wq solo se destruye en nci_unregister_device(), que (creo) fue llamada desde virtual_ncidev_close() cuando syzbot cerr\u00f3 un \u0027fd\u0027 de virtual_ncidev.  El problema es que nci_unregister_device() destruye nci_dev.cmd_wq primero y luego llama a nfc_unregister_device(), que elimina el dispositivo de rfkill mediante rfkill_unregister().  As\u00ed, el dispositivo sigue siendo visible a trav\u00e9s de rfkill incluso despu\u00e9s de que nci_dev.cmd_wq sea destruida.  Desregistremos el dispositivo de rfkill primero en nci_unregister_device().  Tenga en cuenta que no podemos llamar a nfc_unregister_device() antes de nci_close_device() porque    1) nfc_unregister_device() llama a device_del() que libera toda la memoria asignada por devm_kzalloc() y vinculada a ndev-\u0026gt;conn_info_list    2) nci_rx_work() podr\u00eda intentar encolar nci_conn_info a ndev-\u0026gt;conn_info_list lo que podr\u00eda provocar una fuga de memoria  Por lo tanto, nfc_unregister_device() se divide en dos funciones para que podamos eliminar las interfaces de rfkill solo antes de nci_close_device().  [0]: DEBUG_LOCKS_WARN_ON(1) ADVERTENCIA: kernel/locking/lockdep.c:238 en hlock_class kernel/locking/lockdep.c:238 [inline], CPU#0: syz.0.8675/6349 ADVERTENCIA: kernel/locking/lockdep.c:238 en check_wait_context kernel/locking/lockdep.c:4854 [inline], CPU#0: syz.0.8675/6349 ADVERTENCIA: kernel/locking/lockdep.c:238 en __lock_acquire+0x39d/0x2cf0 kernel/locking/lockdep.c:5187, CPU#0: syz.0.8675/6349 M\u00f3dulos enlazados: CPU: 0 UID: 0 PID: 6349 Comm: syz.0.8675 No contaminado syzkaller #0 PREEMPT(full) Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026 RIP: 0010:hlock_class kernel/locking/lockdep.c:238 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4854 [inline] RIP: 0010:__lock_acquire+0x3a4/0x2cf0 kernel/locking/lockdep.c:5187 C\u00f3digo: 18 00 4c 8b 74 24 08 75 27 90 e8 17 f2 fc 02 85 c0 74 1c 83 3d 50 e0 4e 0e 00 75 13 48 8d 3d 43 f7 51 0e 48 c7 c6 8b 3a de 8d \u0026lt;67\u0026gt; 48 0f b9 3a 90 31 c0 0f b6 98 c4 00 00 00 41 8b 45 20 25 ff 1f RSP: 0018:ffffc9000c767680 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000040000 RCX: 0000000000080000 RDX: ffffc90013080000 RSI: ffffffff8dde3a8b RDI: ffffffff8ff24ca0 RBP: 0000000000000003 R08: ffffffff8fef35a3 R09: 1ffffffff1fde6b4 R10: dffffc0000000000 R11: fffffbfff1fde6b5 R12: 00000000000012a2 R13: ffff888030338ba8 R14: ffff888030338000 R15: ffff888030338b30 FS:  00007fa5995f66c0(0000) GS:ffff8881256f8000(0000) knlGS:0000000000000000 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7e72f842d0 CR3: 00000000485a0000 CR4: 00000000003526f0 Ruta de llamada:    lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868  touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3940  __flush_workqueue+0x14b/0x14f0 kernel/workqueue.c:3982  nci_close_device+0x302/0x630 net/nfc/nci/core.c:567  nci_dev_down+0x3b/0x50 net/nfc/nci/core.c:639  nfc_dev_down+0x152/0x290 net/nfc/core.c:161  nfc_rfkill_set_block+0x2d/0x100 net/nfc/core.c:179  rfkill_set_block+0x1d2/0x440 net/rfkill/core.c:346  rfkill_fop_write+0x461/0x5a0 net/rfkill/core.c:1301  vfs_write+0x29a/0xb90 fs/read_write.c:684    ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"include/net/nfc/nfc.h\",\"net/nfc/core.c\",\"net/nfc/nci/core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6a2968aaf50c7a22fced77a5e24aa636281efca8\",\"lessThan\":\"cd4412d5905ee580e96c48360dc98fcd9e6f3208\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6a2968aaf50c7a22fced77a5e24aa636281efca8\",\"lessThan\":\"eaa5da5130deda26420273d4610cf6e4f794ed75\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6a2968aaf50c7a22fced77a5e24aa636281efca8\",\"lessThan\":\"8ea4d96419fb20f15a52ce657d49f1e7c91eb7ac\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6a2968aaf50c7a22fced77a5e24aa636281efca8\",\"lessThan\":\"546eba0b10989de9ccc7fd619e874a30561e2b88\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6a2968aaf50c7a22fced77a5e24aa636281efca8\",\"lessThan\":\"126cd30cad37bc7c2c85fe2df2a522d4edf0a5c5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6a2968aaf50c7a22fced77a5e24aa636281efca8\",\"lessThan\":\"c3369fc5e6120a72169e71acd72e987907a682af\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6a2968aaf50c7a22fced77a5e24aa636281efca8\",\"lessThan\":\"d2492688bb9fed6ab6e313682c387ae71a66ebae\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"include/net/nfc/nfc.h\",\"net/nfc/core.c\",\"net/nfc/nci/core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.249\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.199\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.162\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.123\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.69\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.9\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.2\",\"versionEndExcluding\":\"5.10.249\",\"matchCriteriaId\":\"F5D77C54-7B3F-4C98-BED6-0D950E9E7A26\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.199\",\"matchCriteriaId\":\"A247FBA6-BEB9-484F-B892-DD5517949CCD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.162\",\"matchCriteriaId\":\"6579E0D4-0641-479D-A4C3-0EF618798C55\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.123\",\"matchCriteriaId\":\"316D8D4E-FE44-4C76-8403-63CAF51EEFC2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.69\",\"matchCriteriaId\":\"3F0D11B0-A3DA-4D8F-89B9-CFD2094EBA37\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.9\",\"matchCriteriaId\":\"171CFCB2-8F49-4F9E-8A67-FAC6BF45B5A2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"17B67AA7-40D6-4AFA-8459-F200F3D7CFD1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C47E4CC9-C826-4FA9-B014-7FE3D9B318B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F71D92C0-C023-48BD-B3B6-70B638EEE298\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"13580667-0A98-40CC-B29F-D12790B91BDB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"3EF854A1-ABB1-4E93-BE9A-44569EC76C0D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/126cd30cad37bc7c2c85fe2df2a522d4edf0a5c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/546eba0b10989de9ccc7fd619e874a30561e2b88\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8ea4d96419fb20f15a52ce657d49f1e7c91eb7ac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c3369fc5e6120a72169e71acd72e987907a682af\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cd4412d5905ee580e96c48360dc98fcd9e6f3208\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d2492688bb9fed6ab6e313682c387ae71a66ebae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/eaa5da5130deda26420273d4610cf6e4f794ed75\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T11:12:17+00:00",
      "cve": "CVE-2026-23167",
      "id": "CVE-2026-23167",
      "initial_release_date": "2026-02-14T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nfc: nci: Fix race between rfkill and nci_unregister_device()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23167.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-24T02:39:00Z",
      "cve": "CVE-2026-23167",
      "id": "CVE-2026-23167",
      "initial_release_date": "2026-02-16T00:25:48Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "605",
      "product_status:known_not_affected": "72",
      "product_status:recommended": "295",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23167",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23167.json",
      "version": "26"
    }
  }
}



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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.