{
  "cveId": "CVE-2024-44941",
  "url": "https://patchblox.com/security/cve/CVE-2024-44941",
  "summary": "CVE-2024-44941 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-44941, released August 26, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to cover read extent cache access with...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to cover read extent cache access with lock  syzbot reports a f2fs bug as below:  BUG: KASAN: slab-use-after-free in sanity_check_extent_cache\u002B0x370/0x410 fs/f2fs/extent_cache.c:46 Read of size 4 at addr ffff8880739ab220 by task syz-executor200/5097  CPU: 0 PID: 5097 Comm: syz-executor200 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace:  \u003CTASK\u003E  __dump_stack lib/dump_stack.c:88 [inline]  dump_stack_lvl\u002B0x241/0x360 lib/dump_stack.c:114  print_address_description mm/kasan/report.c:377 [inline]  print_report\u002B0x169/0x550 mm/kasan/report.c:488  kasan_report\u002B0x143/0x180 mm/kasan/report.c:601  sanity_check_extent_cache\u002B0x370/0x410 fs/f2fs/extent_cache.c:46  do_read_inode fs/f2fs/inode.c:509 [inline]  f2fs_iget\u002B0x33e1/0x46e0 fs/f2fs/inode.c:560  f2fs_nfs_get_inode\u002B0x74/0x100 fs/f2fs/super.c:3237  generic_fh_to_dentry\u002B0x9f/0xf0 fs/libfs.c:1413  exportfs_decode_fh_raw\u002B0x152/0x5f0 fs/exportfs/expfs.c:444  exportfs_decode_fh\u002B0x3c/0x80 fs/exportfs/expfs.c:584  do_handle_to_path fs/fhandle.c:155 [inline]  handle_to_path fs/fhandle.c:210 [inline]  do_handle_open\u002B0x495/0x650 fs/fhandle.c:226  do_syscall_x64 arch/x86/entry/common.c:52 [inline]  do_syscall_64\u002B0xf5/0x240 arch/x86/entry/common.c:83  entry_SYSCALL_64_after_hwframe\u002B0x77/0x7f  We missed to cover sanity_check_extent_cache() w/ extent cache lock, so, below race case may happen, result in use after free issue.  - f2fs_iget  - do_read_inode   - f2fs_init_read_extent_tree   : add largest extent entry in to cache \t\t\t\t\t- shrink \t\t\t\t\t - f2fs_shrink_read_extent_tree \t\t\t\t\t  - __shrink_extent_tree \t\t\t\t\t   - __detach_extent_node \t\t\t\t\t   : drop largest extent entry   - sanity_check_extent_cache   : access et-\u003Elargest w/o lock  let\u0027s refactor sanity_check_extent_cache() to avoid extent cache access and call it before f2fs_init_read_extent_tree() to fix this issue.",
  "published": "2024-08-26T12:15:06Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00211,
  "epssPercentile": 0.11371,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.10.6-1",
      "fix": "DEBIAN-CVE-2024-44941",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-44941",
      "released": "2024-08-26T12:15:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.10.6-1",
      "fix": "DEBIAN-CVE-2024-44941",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-44941",
      "released": "2024-08-26T12:15:06Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}