{
  "cveId": "CVE-2022-49738",
  "url": "https://patchblox.com/security/cve/CVE-2022-49738",
  "summary": "CVE-2022-49738 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49738, released March 27, 2025. 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 do sanity check on i_extra_isize in...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to do sanity check on i_extra_isize in is_alive()  syzbot found a f2fs bug:  BUG: KASAN: slab-out-of-bounds in data_blkaddr fs/f2fs/f2fs.h:2891 [inline] BUG: KASAN: slab-out-of-bounds in is_alive fs/f2fs/gc.c:1117 [inline] BUG: KASAN: slab-out-of-bounds in gc_data_segment fs/f2fs/gc.c:1520 [inline] BUG: KASAN: slab-out-of-bounds in do_garbage_collect\u002B0x386a/0x3df0 fs/f2fs/gc.c:1734 Read of size 4 at addr ffff888076557568 by task kworker/u4:3/52  CPU: 1 PID: 52 Comm: kworker/u4:3 Not tainted 6.1.0-rc4-syzkaller-00362-gfef7fd48922d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: writeback wb_workfn (flush-7:0) Call Trace: \u003CTASK\u003E __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl\u002B0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report\u002B0x15e/0x45d mm/kasan/report.c:395 kasan_report\u002B0xbb/0x1f0 mm/kasan/report.c:495 data_blkaddr fs/f2fs/f2fs.h:2891 [inline] is_alive fs/f2fs/gc.c:1117 [inline] gc_data_segment fs/f2fs/gc.c:1520 [inline] do_garbage_collect\u002B0x386a/0x3df0 fs/f2fs/gc.c:1734 f2fs_gc\u002B0x88c/0x20a0 fs/f2fs/gc.c:1831 f2fs_balance_fs\u002B0x544/0x6b0 fs/f2fs/segment.c:410 f2fs_write_inode\u002B0x57e/0xe20 fs/f2fs/inode.c:753 write_inode fs/fs-writeback.c:1440 [inline] __writeback_single_inode\u002B0xcfc/0x1440 fs/fs-writeback.c:1652 writeback_sb_inodes\u002B0x54d/0xf90 fs/fs-writeback.c:1870 wb_writeback\u002B0x2c5/0xd70 fs/fs-writeback.c:2044 wb_do_writeback fs/fs-writeback.c:2187 [inline] wb_workfn\u002B0x2dc/0x12f0 fs/fs-writeback.c:2227 process_one_work\u002B0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread\u002B0x665/0x1080 kernel/workqueue.c:2436 kthread\u002B0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork\u002B0x1f/0x30 arch/x86/entry/entry_64.S:306  The root cause is that we forgot to do sanity check on .i_extra_isize in below path, result in accessing invalid address later, fix it. - gc_data_segment  - is_alive   - data_blkaddr    - offset_in_addr",
  "published": "2025-03-27T17:15:38Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.00199,
  "epssPercentile": 0.09726,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.11-1",
      "fix": "DEBIAN-CVE-2022-49738",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49738",
      "released": "2025-03-27T17:15:38Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.11-1",
      "fix": "DEBIAN-CVE-2022-49738",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49738",
      "released": "2025-03-27T17:15:38Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.11-1",
      "fix": "DEBIAN-CVE-2022-49738",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49738",
      "released": "2025-03-27T17:15:38Z"
    }
  ],
  "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"
  }
}