udf: Fix a slab-out-of-bounds write bug in udf_find_entry()

{
  "id": "c6e4b564b74608d82ea59738e6afb551faee30e1724c5692347b6b768322884b",
  "url": "https://osv.dev/vulnerability/CVE-2022-49846",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "udf: Fix a slab-out-of-bounds write bug in udf_find_entry()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: udf: Fix a slab-out-of-bounds write bug in udf_find_entry() Syzbot reported a slab-out-of-bounds Write bug: loop0: detected capacity change from 0 to 2048 ================================================================== BUG: KASAN: slab-out-of-bounds in udf_find_entry+0x8a5/0x14f0 fs/udf/namei.c:253 Write of size 105 at addr ffff8880123ff896 by task syz-executor323/3610 CPU: 0 PID: 3610 Comm: syz-executor323 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:284 print_report+0x107/0x1f0 mm/kasan/report.c:395 kasan_report+0xcd/0x100 mm/kasan/report.c:495 kasan_check_range+0x2a7/0x2e0 mm/kasan/generic.c:189 memcpy+0x3c/0x60 mm/kasan/shadow.c:66 udf_find_entry+0x8a5/0x14f0 fs/udf/namei.c:253 udf_lookup+0xef/0x340 fs/udf/namei.c:309 lookup_open fs/namei.c:3391 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x10e6/0x2df0 fs/namei.c:3710 do_filp_open+0x264/0x4f0 fs/namei.c:3740 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_creat fs/open.c:1402 [inline] __se_sys_creat fs/open.c:1396 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1396 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/e",
    "evidence": "osv:CVE-2022-49846",
    "products": [
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    "severity": "high",
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      "aliases": [
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      "metrics": [
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          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
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      "modified": "2026-10-28T02:30:36.854606846Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/03f9582a6a2ebd25a440896475c968428c4b63e7",
        "https://git.kernel.org/stable/c/583fdd98d94acba1e7225e5cc29063aef0741030",
        "https://git.kernel.org/stable/c/7a6051d734f1ed0031e2216f9a538621235c11a4",
        "https://git.kernel.org/stable/c/ac79001b8e603226fab17240a79cb9ef679d3cd9",
        "https://git.kernel.org/stable/c/c736ed8541605e3a25075bb1cbf8f38cb3083238",
        "https://git.kernel.org/stable/c/c8af247de385ce49afabc3bf1cf4fd455c94bfe8",
        "https://git.kernel.org/stable/c/d8971f410739a864c537e0ac29344a7b6c450232",
        "https://git.kernel.org/stable/c/f1517721c408631f09d54c743aa70cb07fd3eebd",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49846.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49846",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49846.json"
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        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 504098,
  "published_at": "2025-05-01T14:10:00.703+00:00"
}