{
  "cveId": "CVE-2022-50747",
  "url": "https://patchblox.com/security/cve/CVE-2022-50747",
  "summary": "CVE-2022-50747 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50747, released December 24, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  hfs: Fix OOB Write in hfs_asc2mac  Syzbot report...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  hfs: Fix OOB Write in hfs_asc2mac  Syzbot reported a OOB Write bug:  loop0: detected capacity change from 0 to 64 ================================================================== BUG: KASAN: slab-out-of-bounds in hfs_asc2mac\u002B0x467/0x9a0 fs/hfs/trans.c:133 Write of size 1 at addr ffff88801848314e by task syz-executor391/3632  Call Trace:  \u003CTASK\u003E  __dump_stack lib/dump_stack.c:88 [inline]  dump_stack_lvl\u002B0x1b1/0x28e lib/dump_stack.c:106  print_address_description\u002B0x74/0x340 mm/kasan/report.c:284  print_report\u002B0x107/0x1f0 mm/kasan/report.c:395  kasan_report\u002B0xcd/0x100 mm/kasan/report.c:495  hfs_asc2mac\u002B0x467/0x9a0 fs/hfs/trans.c:133  hfs_cat_build_key\u002B0x92/0x170 fs/hfs/catalog.c:28  hfs_lookup\u002B0x1ab/0x2c0 fs/hfs/dir.c:31  lookup_open fs/namei.c:3391 [inline]  open_last_lookups fs/namei.c:3481 [inline]  path_openat\u002B0x10e6/0x2df0 fs/namei.c:3710  do_filp_open\u002B0x264/0x4f0 fs/namei.c:3740  If in-\u003Elen is much larger than HFS_NAMELEN(31) which is the maximum length of an HFS filename, a OOB write could occur in hfs_asc2mac(). In that case, when the dst reaches the boundary, the srclen is still greater than 0, which causes a OOB write. Fix this by adding a check on dstlen in while() before writing to dst address.",
  "published": "2025-12-24T13:16:01Z",
  "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": 0.11368,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50747",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50747",
      "released": "2025-12-24T13:16:01Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50747",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50747",
      "released": "2025-12-24T13:16:01Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.4-1",
      "fix": "DEBIAN-CVE-2022-50747",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50747",
      "released": "2025-12-24T13:16:01Z"
    }
  ],
  "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"
  }
}