{
  "cveId": "CVE-2021-47145",
  "url": "https://patchblox.com/security/cve/CVE-2021-47145",
  "summary": "CVE-2021-47145 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47145, released March 25, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  btrfs: do not BUG_ON in link_to_fixup_dir  While...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  btrfs: do not BUG_ON in link_to_fixup_dir  While doing error injection testing I got the following panic    kernel BUG at fs/btrfs/tree-log.c:1862!   invalid opcode: 0000 [#1] SMP NOPTI   CPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1\u002B #305   Hardware name: QEMU Standard PC (Q35 \u002B ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014   RIP: 0010:link_to_fixup_dir\u002B0xd5/0xe0   RSP: 0018:ffffb5800180fa30 EFLAGS: 00010216   RAX: fffffffffffffffb RBX: 00000000fffffffb RCX: ffff8f595287faf0   RDX: ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000   RBP: ffff8f5953af9450 R08: 0000000000000019 R09: 0000000000000001   R10: 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800   R13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065   FS:  00007fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000   CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033   CR2: 00007fc5287f47c0 CR3: 000000011275e002 CR4: 0000000000370ee0   Call Trace:    replay_one_buffer\u002B0x409/0x470    ? btree_read_extent_buffer_pages\u002B0xd0/0x110    walk_up_log_tree\u002B0x157/0x1e0    walk_log_tree\u002B0xa6/0x1d0    btrfs_recover_log_trees\u002B0x1da/0x360    ? replay_one_extent\u002B0x7b0/0x7b0    open_ctree\u002B0x1486/0x1720    btrfs_mount_root.cold\u002B0x12/0xea    ? __kmalloc_track_caller\u002B0x12f/0x240    legacy_get_tree\u002B0x24/0x40    vfs_get_tree\u002B0x22/0xb0    vfs_kern_mount.part.0\u002B0x71/0xb0    btrfs_mount\u002B0x10d/0x380    ? vfs_parse_fs_string\u002B0x4d/0x90    legacy_get_tree\u002B0x24/0x40    vfs_get_tree\u002B0x22/0xb0    path_mount\u002B0x433/0xa10    __x64_sys_mount\u002B0xe3/0x120    do_syscall_64\u002B0x3d/0x80    entry_SYSCALL_64_after_hwframe\u002B0x44/0xae  We can get -EIO or any number of legitimate errors from btrfs_search_slot(), panicing here is not the appropriate response.  The error path for this code handles errors properly, simply return the error.",
  "published": "2024-03-25T09:15:08Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00269,
  "epssPercentile": 0.19178,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.14.6-1",
      "fix": "DEBIAN-CVE-2021-47145",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47145",
      "released": "2024-03-25T09:15:08Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.14.6-1",
      "fix": "DEBIAN-CVE-2021-47145",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47145",
      "released": "2024-03-25T09:15:08Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.14.6-1",
      "fix": "DEBIAN-CVE-2021-47145",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47145",
      "released": "2024-03-25T09:15:08Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}