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Review reviewHigh

CVE-2022-50747

Linux

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+0x467/0x9a0 fs/hfs/trans.c:133 Write of size 1 at addr ffff88801848314e by task syz-executor391/3632 Call Trace: <TASK> __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/r...

CVSS
7.8
EPSS
0.18%
8.07% percentile
CISA KEV
Not listed
Published
2025.12.24
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.18%
Technical severityCVSS 7.8

Vulnerability overview

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+0x467/0x9a0 fs/hfs/trans.c:133 Write of size 1 at addr ffff88801848314e by task syz-executor391/3632 Call Trace: <TASK> __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/r...

Affected product and versions

Product
Linux
Affected versions
>= 328b9227865026268261a24a97a578907b280415 < 8399318b13dc9e0569dee07ba2994098926d4fb2, >= 328b9227865026268261a24a97a578907b280415 < 95040de81c629cd8d3c6ab5b50a8bd5088068303, >= 328b9227865026268261a24a97a578907b280415 < ba8f0ca386dd15acf5a93cbac932392c7818eab4, >= 328b9227865026268261a24a97a578907b280415 < 6a95b17e4d4cd2d8278559f930b447f8c9c8cff9, >= 328b9227865026268261a24a97a578907b280415 < cff9fefdfbf5744afbb6d70bff2b49ec2065d23d, >= 328b9227865026268261a24a97a578907b280415 < 7af9cb8cbb81308ce4b06cc7164267faccbf75dd, >= 328b9227865026268261a24a97a578907b280415 < ae21b03f904736eb2aa9bd119d2a14e741f1681f, >= 328b9227865026268261a24a97a578907b280415 < 88579c158e026860c61c4192531e8bc42f4bc642, >= 328b9227865026268261a24a97a578907b280415 < c53ed55cb275344086e32a7080a6b19cb183650b, >= 2.6.14
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available
CVE-2022-50747 — Linux | SECUFOCUS NOW