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CVE-2026-46251 (GCVE-0-2026-46251)

Vulnerability from cvelistv5 – Published: 2026-06-03 15:49 – Updated: 2026-08-05 12:30
VLAI
Title
btrfs: fix block_group_tree dirty_list corruption
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix block_group_tree dirty_list corruption When the incompat flag EXTENT_TREE_V2 is set, we unconditionally add the block group tree to the switch_commits list before calling switch_commit_roots, as we do for the tree root and the chunk root. However, the block group tree uses normal root dirty tracking and in any transaction that does an allocation and dirties a block group, the block group root will already be linked to a list by the dirty_list field and this use of list_add_tail() is invalid and corrupts the prev/next members of block_group_root->dirty_list. This is apparent on a subsequent list_del on the prev if we enable CONFIG_DEBUG_LIST: [32.1571] ------------[ cut here ]------------ [32.1572] list_del corruption. next->prev should beffff958890202538, but was ffff9588992bd538. (next=ffff958890201538) [32.1575] WARNING: lib/list_debug.c:65 at 0x0, CPU#3: sync/607 [32.1583] CPU: 3 UID: 0 PID: 607 Comm: sync Not tainted 6.18.0 #24PREEMPT(none) [32.1585] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS1.17.0-4.fc41 04/01/2014 [32.1587] RIP: 0010:__list_del_entry_valid_or_report+0x108/0x120 [32.1593] RSP: 0018:ffffaa288287fdd0 EFLAGS: 00010202 [32.1594] RAX: 0000000000000001 RBX: ffff95889326e800 RCX:ffff958890201538 [32.1596] RDX: ffff9588992bd538 RSI: ffff958890202538 RDI:ffffffff82a41e00 [32.1597] RBP: ffff958890202538 R08: ffffffff828fc1e8 R09:00000000ffffefff [32.1599] R10: ffffffff8288c200 R11: ffffffff828e4200 R12:ffff958890201538 [32.1601] R13: ffff95889326e958 R14: ffff958895c24000 R15:ffff958890202538 [32.1603] FS: 00007f0c28eb5740(0000) GS:ffff958af2bd2000(0000)knlGS:0000000000000000 [32.1605] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [32.1607] CR2: 00007f0c28e8a3cc CR3: 0000000109942005 CR4:0000000000370ef0 [32.1609] Call Trace: [32.1610] <TASK> [32.1611] switch_commit_roots+0x82/0x1d0 [btrfs] [32.1615] btrfs_commit_transaction+0x968/0x1550 [btrfs] [32.1618] ? btrfs_attach_transaction_barrier+0x23/0x60 [btrfs] [32.1621] __iterate_supers+0xe8/0x190 [32.1622] ? __pfx_sync_fs_one_sb+0x10/0x10 [32.1623] ksys_sync+0x63/0xb0 [32.1624] __do_sys_sync+0xe/0x20 [32.1625] do_syscall_64+0x73/0x450 [32.1626] entry_SYSCALL_64_after_hwframe+0x76/0x7e [32.1627] RIP: 0033:0x7f0c28d05d2b [32.1632] RSP: 002b:00007ffc9d988048 EFLAGS: 00000246 ORIG_RAX:00000000000000a2 [32.1634] RAX: ffffffffffffffda RBX: 00007ffc9d988228 RCX:00007f0c28d05d2b [32.1636] RDX: 00007f0c28e02301 RSI: 00007ffc9d989b21 RDI:00007f0c28dba90d [32.1637] RBP: 0000000000000001 R08: 0000000000000001 R09:0000000000000000 [32.1639] R10: 0000000000000000 R11: 0000000000000246 R12:000055b96572cb80 [32.1641] R13: 000055b96572b19f R14: 00007f0c28dfa434 R15:000055b96572b034 [32.1643] </TASK> [32.1644] irq event stamp: 0 [32.1644] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [32.1646] hardirqs last disabled at (0): [<ffffffff81298817>]copy_process+0xb37/0x2260 [32.1648] softirqs last enabled at (0): [<ffffffff81298817>]copy_process+0xb37/0x2260 [32.1650] softirqs last disabled at (0): [<0000000000000000>] 0x0 [32.1652] ---[ end trace 0000000000000000 ]--- Furthermore, this list corruption eventually (when we happen to add a new block group) results in getting the switch_commits and dirty_cowonly_roots lists mixed up and attempting to call update_root on the tree root which can't be found in the tree root, resulting in a transaction abort: [87.8269] BTRFS critical (device nvme1n1): unable to find root key (1 0 0) in tree 1 [87.8272] ------------[ cut here ]------------ [87.8274] BTRFS: Transaction aborted (error -117) [87.8275] WARNING: fs/btrfs/root-tree.c:153 at 0x0, CPU#4: sync/703 [87.8285] CPU: 4 UID: 0 PID: 703 Comm: sync Not tainted 6.18.0 #25 PREEMPT(none) [87.8287] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.17.0-4.fc41 0 ---truncated---
Severity
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 14033b08a02916e85ffc5397e4ac15337359f3ae , < 6e10283b5519d987d880d71bec90cdc7f2ec62b3 (git)
Affected: 14033b08a02916e85ffc5397e4ac15337359f3ae , < e3d1fd084319f8f0830b22f014c7af6a96b4497b (git)
Affected: 14033b08a02916e85ffc5397e4ac15337359f3ae , < 4eb830847d84276f1c8ea46541cfeeedaba1fb63 (git)
Affected: 14033b08a02916e85ffc5397e4ac15337359f3ae , < 80e1fda9c084dcf54819a12bc7682ec0afd2d8f4 (git)
Affected: 14033b08a02916e85ffc5397e4ac15337359f3ae , < 201091da34c4f113af6b4a7407091c39bf29d4ca (git)
Affected: 14033b08a02916e85ffc5397e4ac15337359f3ae , < 3a1f4264daed4b419c325a7fe35e756cada3cf82 (git)
Affected: dabf41db56f378a360ff0219c467f8dfecda7dd6 (git)
Affected: 6.0.19 , < 6.1 (semver)
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Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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              "status": "unaffected",
              "version": "0",
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              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.165",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
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                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.18.14",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
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                },
                {
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                },
                {
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix block_group_tree dirty_list corruption\n\nWhen the incompat flag EXTENT_TREE_V2 is set, we unconditionally add the\nblock group tree to the switch_commits list before calling\nswitch_commit_roots, as we do for the tree root and the chunk root.\nHowever, the block group tree uses normal root dirty tracking and in any\ntransaction that does an allocation and dirties a block group, the block\ngroup root will already be linked to a list by the dirty_list field and\nthis use of list_add_tail() is invalid and corrupts the prev/next\nmembers of block_group_root-\u003edirty_list.\n\nThis is apparent on a subsequent list_del on the prev if we enable\nCONFIG_DEBUG_LIST:\n\n  [32.1571] ------------[ cut here ]------------\n  [32.1572] list_del corruption. next-\u003eprev should beffff958890202538, but was ffff9588992bd538. (next=ffff958890201538)\n  [32.1575] WARNING: lib/list_debug.c:65 at 0x0, CPU#3: sync/607\n  [32.1583] CPU: 3 UID: 0 PID: 607 Comm: sync Not tainted 6.18.0 #24PREEMPT(none)\n  [32.1585] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS1.17.0-4.fc41 04/01/2014\n  [32.1587] RIP: 0010:__list_del_entry_valid_or_report+0x108/0x120\n  [32.1593] RSP: 0018:ffffaa288287fdd0 EFLAGS: 00010202\n  [32.1594] RAX: 0000000000000001 RBX: ffff95889326e800 RCX:ffff958890201538\n  [32.1596] RDX: ffff9588992bd538 RSI: ffff958890202538 RDI:ffffffff82a41e00\n  [32.1597] RBP: ffff958890202538 R08: ffffffff828fc1e8 R09:00000000ffffefff\n  [32.1599] R10: ffffffff8288c200 R11: ffffffff828e4200 R12:ffff958890201538\n  [32.1601] R13: ffff95889326e958 R14: ffff958895c24000 R15:ffff958890202538\n  [32.1603] FS:  00007f0c28eb5740(0000) GS:ffff958af2bd2000(0000)knlGS:0000000000000000\n  [32.1605] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  [32.1607] CR2: 00007f0c28e8a3cc CR3: 0000000109942005 CR4:0000000000370ef0\n  [32.1609] Call Trace:\n  [32.1610]  \u003cTASK\u003e\n  [32.1611]  switch_commit_roots+0x82/0x1d0 [btrfs]\n  [32.1615]  btrfs_commit_transaction+0x968/0x1550 [btrfs]\n  [32.1618]  ? btrfs_attach_transaction_barrier+0x23/0x60 [btrfs]\n  [32.1621]  __iterate_supers+0xe8/0x190\n  [32.1622]  ? __pfx_sync_fs_one_sb+0x10/0x10\n  [32.1623]  ksys_sync+0x63/0xb0\n  [32.1624]  __do_sys_sync+0xe/0x20\n  [32.1625]  do_syscall_64+0x73/0x450\n  [32.1626]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n  [32.1627] RIP: 0033:0x7f0c28d05d2b\n  [32.1632] RSP: 002b:00007ffc9d988048 EFLAGS: 00000246 ORIG_RAX:00000000000000a2\n  [32.1634] RAX: ffffffffffffffda RBX: 00007ffc9d988228 RCX:00007f0c28d05d2b\n  [32.1636] RDX: 00007f0c28e02301 RSI: 00007ffc9d989b21 RDI:00007f0c28dba90d\n  [32.1637] RBP: 0000000000000001 R08: 0000000000000001 R09:0000000000000000\n  [32.1639] R10: 0000000000000000 R11: 0000000000000246 R12:000055b96572cb80\n  [32.1641] R13: 000055b96572b19f R14: 00007f0c28dfa434 R15:000055b96572b034\n  [32.1643]  \u003c/TASK\u003e\n  [32.1644] irq event stamp: 0\n  [32.1644] hardirqs last  enabled at (0): [\u003c0000000000000000\u003e] 0x0\n  [32.1646] hardirqs last disabled at (0): [\u003cffffffff81298817\u003e]copy_process+0xb37/0x2260\n  [32.1648] softirqs last  enabled at (0): [\u003cffffffff81298817\u003e]copy_process+0xb37/0x2260\n  [32.1650] softirqs last disabled at (0): [\u003c0000000000000000\u003e] 0x0\n  [32.1652] ---[ end trace 0000000000000000 ]---\n\nFurthermore, this list corruption eventually (when we happen to add a\nnew block group) results in getting the switch_commits and\ndirty_cowonly_roots lists mixed up and attempting to call update_root\non the tree root which can\u0027t be found in the tree root, resulting in a\ntransaction abort:\n\n  [87.8269] BTRFS critical (device nvme1n1): unable to find root key (1 0 0) in tree 1\n  [87.8272] ------------[ cut here ]------------\n  [87.8274] BTRFS: Transaction aborted (error -117)\n  [87.8275] WARNING: fs/btrfs/root-tree.c:153 at 0x0, CPU#4: sync/703\n  [87.8285] CPU: 4 UID: 0 PID: 703 Comm: sync Not tainted 6.18.0 #25 PREEMPT(none)\n  [87.8287] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.17.0-4.fc41 0\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The flaw is in btrfs transaction commit (`btrfs_commit_transaction` \u2192 `switch_commit_roots`), reached only through local VFS/syscall paths (writes, `fsync`, `sync`/`btrfs_sync_fs`), not through a network protocol handler.\nAC:L - On a filesystem with `EXTENT_TREE_V2`, any transaction that allocates and dirties the block-group root followed by a commit reliably hits the invalid second `list_add_tail`; the attacker controls writes and when commit runs without races or victim-specific timing.\nPR:N - Exploitation needs only normal local access to perform allocating writes and trigger commit (e.g. `write`/`fallocate` plus `sync`/`fsync`); no root, `CAP_SYS_ADMIN`, or other elevated capability is required on an already-mounted affected btrfs volume.\nUI:N - No victim interaction is required beyond the attacker (or any concurrent writer) performing filesystem I/O that dirties metadata and causes a transaction commit.\nS:U - Impact stays within the kernel/filesystem security domain (metadata corruption, possible further kernel list misuse); it does not cross a VM, container, or IOMMU boundary.\nC:H - The bug corrupts kernel `struct list_head` linkage in `switch_commits`/`dirty_cowonly_roots`; such heap/list corruption can be turned into arbitrary kernel reads even though the primary symptom is filesystem failure.\nI:H - List corruption can mis-route commit processing and, as demonstrated, leads to btrfs transaction abort, \u201cfilesystem corrupted\u201d errors, and forced read-only state\u2014arbitrary integrity loss on the affected volume.\nA:H - Successful trigger forces the btrfs filesystem into a corrupted, read-only state and can emit kernel warnings during `list_del`, denying normal read/write availability for all users of that filesystem."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:30:45.952Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6e10283b5519d987d880d71bec90cdc7f2ec62b3"
        },
        {
          "url": "https://git.kernel.org/stable/c/e3d1fd084319f8f0830b22f014c7af6a96b4497b"
        },
        {
          "url": "https://git.kernel.org/stable/c/4eb830847d84276f1c8ea46541cfeeedaba1fb63"
        },
        {
          "url": "https://git.kernel.org/stable/c/80e1fda9c084dcf54819a12bc7682ec0afd2d8f4"
        },
        {
          "url": "https://git.kernel.org/stable/c/201091da34c4f113af6b4a7407091c39bf29d4ca"
        },
        {
          "url": "https://git.kernel.org/stable/c/3a1f4264daed4b419c325a7fe35e756cada3cf82"
        }
      ],
      "title": "btrfs: fix block_group_tree dirty_list corruption",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46251",
    "datePublished": "2026-06-03T15:49:47.684Z",
    "dateReserved": "2026-05-13T15:03:33.107Z",
    "dateUpdated": "2026-08-05T12:30:45.952Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-46251",
      "date": "2026-09-16",
      "epss": "0.00132",
      "percentile": "0.03153"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-46251\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-03T18:16:25.603\",\"lastModified\":\"2026-06-17T10:53:24.967\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: fix block_group_tree dirty_list corruption\\n\\nWhen the incompat flag EXTENT_TREE_V2 is set, we unconditionally add the\\nblock group tree to the switch_commits list before calling\\nswitch_commit_roots, as we do for the tree root and the chunk root.\\nHowever, the block group tree uses normal root dirty tracking and in any\\ntransaction that does an allocation and dirties a block group, the block\\ngroup root will already be linked to a list by the dirty_list field and\\nthis use of list_add_tail() is invalid and corrupts the prev/next\\nmembers of block_group_root-\u003edirty_list.\\n\\nThis is apparent on a subsequent list_del on the prev if we enable\\nCONFIG_DEBUG_LIST:\\n\\n  [32.1571] ------------[ cut here ]------------\\n  [32.1572] list_del corruption. next-\u003eprev should beffff958890202538, but was ffff9588992bd538. (next=ffff958890201538)\\n  [32.1575] WARNING: lib/list_debug.c:65 at 0x0, CPU#3: sync/607\\n  [32.1583] CPU: 3 UID: 0 PID: 607 Comm: sync Not tainted 6.18.0 #24PREEMPT(none)\\n  [32.1585] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS1.17.0-4.fc41 04/01/2014\\n  [32.1587] RIP: 0010:__list_del_entry_valid_or_report+0x108/0x120\\n  [32.1593] RSP: 0018:ffffaa288287fdd0 EFLAGS: 00010202\\n  [32.1594] RAX: 0000000000000001 RBX: ffff95889326e800 RCX:ffff958890201538\\n  [32.1596] RDX: ffff9588992bd538 RSI: ffff958890202538 RDI:ffffffff82a41e00\\n  [32.1597] RBP: ffff958890202538 R08: ffffffff828fc1e8 R09:00000000ffffefff\\n  [32.1599] R10: ffffffff8288c200 R11: ffffffff828e4200 R12:ffff958890201538\\n  [32.1601] R13: ffff95889326e958 R14: ffff958895c24000 R15:ffff958890202538\\n  [32.1603] FS:  00007f0c28eb5740(0000) GS:ffff958af2bd2000(0000)knlGS:0000000000000000\\n  [32.1605] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n  [32.1607] CR2: 00007f0c28e8a3cc CR3: 0000000109942005 CR4:0000000000370ef0\\n  [32.1609] Call Trace:\\n  [32.1610]  \u003cTASK\u003e\\n  [32.1611]  switch_commit_roots+0x82/0x1d0 [btrfs]\\n  [32.1615]  btrfs_commit_transaction+0x968/0x1550 [btrfs]\\n  [32.1618]  ? btrfs_attach_transaction_barrier+0x23/0x60 [btrfs]\\n  [32.1621]  __iterate_supers+0xe8/0x190\\n  [32.1622]  ? __pfx_sync_fs_one_sb+0x10/0x10\\n  [32.1623]  ksys_sync+0x63/0xb0\\n  [32.1624]  __do_sys_sync+0xe/0x20\\n  [32.1625]  do_syscall_64+0x73/0x450\\n  [32.1626]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n  [32.1627] RIP: 0033:0x7f0c28d05d2b\\n  [32.1632] RSP: 002b:00007ffc9d988048 EFLAGS: 00000246 ORIG_RAX:00000000000000a2\\n  [32.1634] RAX: ffffffffffffffda RBX: 00007ffc9d988228 RCX:00007f0c28d05d2b\\n  [32.1636] RDX: 00007f0c28e02301 RSI: 00007ffc9d989b21 RDI:00007f0c28dba90d\\n  [32.1637] RBP: 0000000000000001 R08: 0000000000000001 R09:0000000000000000\\n  [32.1639] R10: 0000000000000000 R11: 0000000000000246 R12:000055b96572cb80\\n  [32.1641] R13: 000055b96572b19f R14: 00007f0c28dfa434 R15:000055b96572b034\\n  [32.1643]  \u003c/TASK\u003e\\n  [32.1644] irq event stamp: 0\\n  [32.1644] hardirqs last  enabled at (0): [\u003c0000000000000000\u003e] 0x0\\n  [32.1646] hardirqs last disabled at (0): [\u003cffffffff81298817\u003e]copy_process+0xb37/0x2260\\n  [32.1648] softirqs last  enabled at (0): [\u003cffffffff81298817\u003e]copy_process+0xb37/0x2260\\n  [32.1650] softirqs last disabled at (0): [\u003c0000000000000000\u003e] 0x0\\n  [32.1652] ---[ end trace 0000000000000000 ]---\\n\\nFurthermore, this list corruption eventually (when we happen to add a\\nnew block group) results in getting the switch_commits and\\ndirty_cowonly_roots lists mixed up and attempting to call update_root\\non the tree root which can\u0027t be found in the tree root, resulting in a\\ntransaction abort:\\n\\n  [87.8269] BTRFS critical (device nvme1n1): unable to find root key (1 0 0) in tree 1\\n  [87.8272] ------------[ cut here ]------------\\n  [87.8274] BTRFS: Transaction aborted (error -117)\\n  [87.8275] WARNING: fs/btrfs/root-tree.c:153 at 0x0, CPU#4: sync/703\\n  [87.8285] CPU: 4 UID: 0 PID: 703 Comm: sync Not tainted 6.18.0 #25 PREEMPT(none)\\n  [87.8287] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.17.0-4.fc41 0\\n---truncated---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/btrfs/transaction.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"14033b08a02916e85ffc5397e4ac15337359f3ae\",\"lessThan\":\"6e10283b5519d987d880d71bec90cdc7f2ec62b3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"14033b08a02916e85ffc5397e4ac15337359f3ae\",\"lessThan\":\"e3d1fd084319f8f0830b22f014c7af6a96b4497b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"14033b08a02916e85ffc5397e4ac15337359f3ae\",\"lessThan\":\"4eb830847d84276f1c8ea46541cfeeedaba1fb63\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"14033b08a02916e85ffc5397e4ac15337359f3ae\",\"lessThan\":\"80e1fda9c084dcf54819a12bc7682ec0afd2d8f4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"14033b08a02916e85ffc5397e4ac15337359f3ae\",\"lessThan\":\"201091da34c4f113af6b4a7407091c39bf29d4ca\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"14033b08a02916e85ffc5397e4ac15337359f3ae\",\"lessThan\":\"3a1f4264daed4b419c325a7fe35e756cada3cf82\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dabf41db56f378a360ff0219c467f8dfecda7dd6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6.0.19\",\"lessThan\":\"6.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/btrfs/transaction.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.1\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.1\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.165\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.128\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.75\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.14\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.4\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"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:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.5,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0.19\",\"versionEndExcluding\":\"6.1.165\",\"matchCriteriaId\":\"2B225BF5-A395-474D-B3BC-E33E67B2BCEE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.128\",\"matchCriteriaId\":\"851E9353-6C09-4CC9-877E-E09DB164A3C2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.75\",\"matchCriteriaId\":\"BCE16369-98ED-41CF-8995-DFDC10B288D2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.14\",\"matchCriteriaId\":\"BF463CB7-1F58-4607-B847-77ED23E4B9B7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.4\",\"matchCriteriaId\":\"672A3E79-EC03-479D-8503-361DFBDC8092\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/201091da34c4f113af6b4a7407091c39bf29d4ca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3a1f4264daed4b419c325a7fe35e756cada3cf82\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4eb830847d84276f1c8ea46541cfeeedaba1fb63\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6e10283b5519d987d880d71bec90cdc7f2ec62b3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/80e1fda9c084dcf54819a12bc7682ec0afd2d8f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e3d1fd084319f8f0830b22f014c7af6a96b4497b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-05T14:45:41+00:00",
      "cve": "CVE-2026-46251",
      "id": "CVE-2026-46251",
      "initial_release_date": "2026-06-03T00:00:00+00:00",
      "product_status:known_affected": "90",
      "product_status:known_not_affected": "184",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: btrfs: fix block_group_tree dirty_list corruption",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46251.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T01:10:36Z",
      "cve": "CVE-2026-46251",
      "id": "CVE-2026-46251",
      "initial_release_date": "2026-06-04T02:21:55Z",
      "product_status:known_affected": "108",
      "product_status:known_not_affected": "279",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-46251",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46251.json",
      "version": "5"
    }
  }
}



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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

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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.