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CVE-2023-54032

Estado: AplazadaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

btrfs: fix race when deleting quota root from the dirty cow roots list

When disabling quotas we are deleting the quota root from the list fs_info->dirty_cowonly_roots without taking the lock that protects it, which is struct btrfs_fs_info::trans_lock. This unsynchronized list manipulation may cause chaos if there's another concurrent manipulation of this list, such as when adding a root to it with ctree.c:add_root_to_dirty_list().

This can result in all sorts of weird failures caused by a race, such as the following crash:

So fix this by locking struct btrfs_fs_info::trans_lock before deleting the quota root from that list.

Detalles técnicos trazas, registros y código del informe original
  [337571.278245] general protection fault, probably for non-canonical address 0xdead000000000108: 0000 [#1] PREEMPT SMP PTI
  [337571.278933] CPU: 1 PID: 115447 Comm: btrfs Tainted: G        W          6.4.0-rc6-btrfs-next-134+ #1
  [337571.279153] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
  [337571.279572] RIP: 0010:commit_cowonly_roots+0x11f/0x250 [btrfs]
  [337571.279928] Code: 85 38 06 00 (...)
  [337571.280363] RSP: 0018:ffff9f63446efba0 EFLAGS: 00010206
  [337571.280582] RAX: ffff942d98ec2638 RBX: ffff9430b82b4c30 RCX: 0000000449e1c000
  [337571.280798] RDX: dead000000000100 RSI: ffff9430021e4900 RDI: 0000000000036070
  [337571.281015] RBP: ffff942d98ec2000 R08: ffff942d98ec2000 R09: 000000000000015b
  [337571.281254] R10: 0000000000000009 R11: 0000000000000001 R12: ffff942fe8fbf600
  [337571.281476] R13: ffff942dabe23040 R14: ffff942dabe20800 R15: ffff942d92cf3b48
  [337571.281723] FS:  00007f478adb7340(0000) GS:ffff94349fa40000(0000) knlGS:0000000000000000
  [337571.281950] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [337571.282184] CR2: 00007f478ab9a3d5 CR3: 000000001e02c001 CR4: 0000000000370ee0
  [337571.282416] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  [337571.282647] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  [337571.282874] Call Trace:
  [337571.283101]  <TASK>
  [337571.283327]  ? __die_body+0x1b/0x60
  [337571.283570]  ? die_addr+0x39/0x60
  [337571.283796]  ? exc_general_protection+0x22e/0x430
  [337571.284022]  ? asm_exc_general_protection+0x22/0x30
  [337571.284251]  ? commit_cowonly_roots+0x11f/0x250 [btrfs]
  [337571.284531]  btrfs_commit_transaction+0x42e/0xf90 [btrfs]
  [337571.284803]  ? _raw_spin_unlock+0x15/0x30
  [337571.285031]  ? release_extent_buffer+0x103/0x130 [btrfs]
  [337571.285305]  reset_balance_state+0x152/0x1b0 [btrfs]
  [337571.285578]  btrfs_balance+0xa50/0x11e0 [btrfs]
  [337571.285864]  ? __kmem_cache_alloc_node+0x14a/0x410
  [337571.286086]  btrfs_ioctl+0x249a/0x3320 [btrfs]
  [337571.286358]  ? mod_objcg_state+0xd2/0x360
  [337571.286577]  ? refill_obj_stock+0xb0/0x160
  [337571.286798]  ? seq_release+0x25/0x30
  [337571.287016]  ? __rseq_handle_notify_resume+0x3ba/0x4b0
  [337571.287235]  ? percpu_counter_add_batch+0x2e/0xa0
  [337571.287455]  ? __x64_sys_ioctl+0x88/0xc0
  [337571.287675]  __x64_sys_ioctl+0x88/0xc0
  [337571.287901]  do_syscall_64+0x38/0x90
  [337571.288126]  entry_SYSCALL_64_after_hwframe+0x72/0xdc
  [337571.288352] RIP: 0033:0x7f478aaffe9b

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-54032",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "bed92eae26ccf280d1a2168b7509447b56675a27",
              "lessThan": "365f318da7384cbac5de6b9c098914888a4d63e7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bed92eae26ccf280d1a2168b7509447b56675a27",
              "lessThan": "6da229754099518cfa27cbfcd0fd042618785fad",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bed92eae26ccf280d1a2168b7509447b56675a27",
              "lessThan": "679c34821ab7cd93c8ccb96fbf57fc44848a78bc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bed92eae26ccf280d1a2168b7509447b56675a27",
              "lessThan": "6819bb0b8552dcc5f82ca606c8911b8c67e0628f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bed92eae26ccf280d1a2168b7509447b56675a27",
              "lessThan": "7ba0da31dd4a8fd24d416016c538a95a5664ff02",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bed92eae26ccf280d1a2168b7509447b56675a27",
              "lessThan": "a53d78d9a8551e72c46ded23e8b0a56e55d32032",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bed92eae26ccf280d1a2168b7509447b56675a27",
              "lessThan": "a5cdc4012efa808e07d073c11dc2f366b5394ad3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bed92eae26ccf280d1a2168b7509447b56675a27",
              "lessThan": "b31cb5a6eb7a48b0a7bfdf06832b1fd5088d8c79",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/btrfs/qgroup.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.6"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.14.322",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.291",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.251",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.188",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.121",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.39",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.4.4",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/btrfs/qgroup.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T11:15:56.193",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/365f318da7384cbac5de6b9c098914888a4d63e7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/679c34821ab7cd93c8ccb96fbf57fc44848a78bc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6819bb0b8552dcc5f82ca606c8911b8c67e0628f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6da229754099518cfa27cbfcd0fd042618785fad",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7ba0da31dd4a8fd24d416016c538a95a5664ff02",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a53d78d9a8551e72c46ded23e8b0a56e55d32032",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a5cdc4012efa808e07d073c11dc2f366b5394ad3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b31cb5a6eb7a48b0a7bfdf06832b1fd5088d8c79",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix race when deleting quota root from the dirty cow roots list\n\nWhen disabling quotas we are deleting the quota root from the list\nfs_info->dirty_cowonly_roots without taking the lock that protects it,\nwhich is struct btrfs_fs_info::trans_lock. This unsynchronized list\nmanipulation may cause chaos if there's another concurrent manipulation\nof this list, such as when adding a root to it with\nctree.c:add_root_to_dirty_list().\n\nThis can result in all sorts of weird failures caused by a race, such as\nthe following crash:\n\n  [337571.278245] general protection fault, probably for non-canonical address 0xdead000000000108: 0000 [#1] PREEMPT SMP PTI\n  [337571.278933] CPU: 1 PID: 115447 Comm: btrfs Tainted: G        W          6.4.0-rc6-btrfs-next-134+ #1\n  [337571.279153] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014\n  [337571.279572] RIP: 0010:commit_cowonly_roots+0x11f/0x250 [btrfs]\n  [337571.279928] Code: 85 38 06 00 (...)\n  [337571.280363] RSP: 0018:ffff9f63446efba0 EFLAGS: 00010206\n  [337571.280582] RAX: ffff942d98ec2638 RBX: ffff9430b82b4c30 RCX: 0000000449e1c000\n  [337571.280798] RDX: dead000000000100 RSI: ffff9430021e4900 RDI: 0000000000036070\n  [337571.281015] RBP: ffff942d98ec2000 R08: ffff942d98ec2000 R09: 000000000000015b\n  [337571.281254] R10: 0000000000000009 R11: 0000000000000001 R12: ffff942fe8fbf600\n  [337571.281476] R13: ffff942dabe23040 R14: ffff942dabe20800 R15: ffff942d92cf3b48\n  [337571.281723] FS:  00007f478adb7340(0000) GS:ffff94349fa40000(0000) knlGS:0000000000000000\n  [337571.281950] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  [337571.282184] CR2: 00007f478ab9a3d5 CR3: 000000001e02c001 CR4: 0000000000370ee0\n  [337571.282416] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  [337571.282647] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  [337571.282874] Call Trace:\n  [337571.283101]  <TASK>\n  [337571.283327]  ? __die_body+0x1b/0x60\n  [337571.283570]  ? die_addr+0x39/0x60\n  [337571.283796]  ? exc_general_protection+0x22e/0x430\n  [337571.284022]  ? asm_exc_general_protection+0x22/0x30\n  [337571.284251]  ? commit_cowonly_roots+0x11f/0x250 [btrfs]\n  [337571.284531]  btrfs_commit_transaction+0x42e/0xf90 [btrfs]\n  [337571.284803]  ? _raw_spin_unlock+0x15/0x30\n  [337571.285031]  ? release_extent_buffer+0x103/0x130 [btrfs]\n  [337571.285305]  reset_balance_state+0x152/0x1b0 [btrfs]\n  [337571.285578]  btrfs_balance+0xa50/0x11e0 [btrfs]\n  [337571.285864]  ? __kmem_cache_alloc_node+0x14a/0x410\n  [337571.286086]  btrfs_ioctl+0x249a/0x3320 [btrfs]\n  [337571.286358]  ? mod_objcg_state+0xd2/0x360\n  [337571.286577]  ? refill_obj_stock+0xb0/0x160\n  [337571.286798]  ? seq_release+0x25/0x30\n  [337571.287016]  ? __rseq_handle_notify_resume+0x3ba/0x4b0\n  [337571.287235]  ? percpu_counter_add_batch+0x2e/0xa0\n  [337571.287455]  ? __x64_sys_ioctl+0x88/0xc0\n  [337571.287675]  __x64_sys_ioctl+0x88/0xc0\n  [337571.287901]  do_syscall_64+0x38/0x90\n  [337571.288126]  entry_SYSCALL_64_after_hwframe+0x72/0xdc\n  [337571.288352] RIP: 0033:0x7f478aaffe9b\n\nSo fix this by locking struct btrfs_fs_info::trans_lock before deleting\nthe quota root from that list."
    }
  ],
  "lastModified": "2026-06-17T06:46:34.230",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}