CVE-2022-50747

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-12-24. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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: __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 hfs_asc2mac+0x467/0x9a0 fs/hfs/trans.c:133 hfs_cat_build_key+0x92/0x170 fs/hfs/catalog.c:28 hfs_lookup+0x1ab/0x2c0 fs/hfs/dir.c:31 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

If in->len 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.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

December 24, 2025

Last Modified

August 5, 2026

Advisory Details (9)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

hfs: Fix OOB Write in hfs_asc2mac - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cff9fefdfbf5744afbb6d70bff2b49ec2065d23d
generic

hfs: Fix OOB Write in hfs_asc2mac - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c53ed55cb275344086e32a7080a6b19cb183650b
generic

hfs: Fix OOB Write in hfs_asc2mac - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ba8f0ca386dd15acf5a93cbac932392c7818eab4
generic

hfs: Fix OOB Write in hfs_asc2mac - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ae21b03f904736eb2aa9bd119d2a14e741f1681f
generic

hfs: Fix OOB Write in hfs_asc2mac - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/95040de81c629cd8d3c6ab5b50a8bd5088068303
generic

hfs: Fix OOB Write in hfs_asc2mac - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/88579c158e026860c61c4192531e8bc42f4bc642
generic

hfs: Fix OOB Write in hfs_asc2mac - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8399318b13dc9e0569dee07ba2994098926d4fb2
generic

hfs: Fix OOB Write in hfs_asc2mac - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7af9cb8cbb81308ce4b06cc7164267faccbf75dd
generic

hfs: Fix OOB Write in hfs_asc2mac - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6a95b17e4d4cd2d8278559f930b447f8c9c8cff9

Vendor Advisories for CVE-2022-50747(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.9.337—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (25 versions)5.10.178-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—6.1.4-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.1.4-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.1.4-1—

Data Freshness Timeline

(refreshed 3× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 196 total refreshes for this CVE.

  1. 2026-09-20 20:13 UTCEPSS rescore
  2. 2026-09-16 14:05 UTCEPSS rescore
  3. 2026-09-16 05:11 UTCEPSS rescore
  4. 2026-09-15 03:07 UTCEPSS rescore
  5. 2026-09-14 05:50 UTCOSV refresh
  6. 2026-09-13 16:44 UTCEPSS rescore
  7. 2026-09-11 14:50 UTCEPSS rescore
  8. 2026-09-11 09:34 UTCEPSS rescore
  9. 2026-09-08 21:57 UTCEPSS rescore
  10. 2026-09-07 15:59 UTCEPSS rescore
  11. 2026-09-06 13:45 UTCEPSS rescore
  12. 2026-09-05 15:25 UTCEPSS rescore
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  14. 2026-09-04 05:04 UTCEPSS rescore
  15. 2026-09-02 14:09 UTCEPSS rescore
  16. 2026-09-01 13:51 UTCEPSS rescore
  17. 2026-08-30 19:15 UTCEPSS rescore
  18. 2026-08-30 01:19 UTCEPSS rescore
  19. 2026-08-28 21:38 UTCEPSS rescore
  20. 2026-08-27 14:22 UTCEPSS rescore
  21. 2026-08-26 14:43 UTCEPSS rescore
  22. 2026-08-26 07:13 UTCOSV refresh
  23. 2026-08-23 00:17 UTCEPSS rescore
  24. 2026-08-21 23:46 UTCEPSS rescore
  25. 2026-08-20 22:53 UTCEPSS rescore
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  1. 2026-08-19 17:01 UTCEPSS rescore
  2. 2026-08-17 13:44 UTCEPSS rescore
  3. 2026-08-16 14:53 UTCEPSS rescore
  4. 2026-08-16 02:12 UTCEPSS rescore
  5. 2026-08-15 01:27 UTCEPSS rescore
  6. 2026-08-13 21:58 UTCEPSS rescore
  7. 2026-08-12 13:48 UTCEPSS rescore
  8. 2026-08-09 22:51 UTCEG score recompute
  9. 2026-08-09 22:51 UTCGHSA enrichment
  10. 2026-08-09 13:44 UTCEPSS rescore
  11. 2026-08-09 13:44 UTCEPSS rescore
  12. 2026-08-08 16:34 UTCEPSS rescore
  13. 2026-08-08 05:28 UTCEG score recompute
  14. 2026-08-08 05:28 UTCGHSA enrichment
  15. 2026-08-07 16:24 UTCEPSS rescore
  16. 2026-08-06 13:44 UTCEPSS rescore
  17. 2026-08-06 07:13 UTCEG score recompute
  18. 2026-08-06 07:13 UTCGHSA enrichment
  19. 2026-08-05 19:15 UTCEPSS rescore
  20. 2026-08-05 09:17 UTCEG score recompute
  21. 2026-08-05 09:17 UTCGHSA enrichment
  22. 2026-08-04 15:07 UTCEPSS rescore
  23. 2026-08-04 10:51 UTCEG score recompute
  24. 2026-08-04 10:51 UTCGHSA enrichment
  25. 2026-08-04 09:25 UTCEG score recompute▲ 7.80
  26. 2026-08-04 09:25 UTCGHSA enrichment
  27. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  28. 2026-08-02 02:24 UTCEPSS rescore
  29. 2026-08-01 04:13 UTCEPSS rescore
  30. 2026-08-01 04:13 UTCEPSS rescore
  31. 2026-07-30 16:25 UTCEPSS rescore
  32. 2026-07-30 01:28 UTCEPSS rescore
  33. 2026-07-28 15:34 UTCEPSS rescore
  34. 2026-07-27 03:39 UTCOSV refresh
  35. 2026-07-26 14:52 UTCEPSS rescore
  36. 2026-07-26 14:52 UTCEPSS rescore
  37. 2026-07-25 14:16 UTCEPSS rescore
  38. 2026-07-24 14:15 UTCEPSS rescore
  39. 2026-07-23 14:16 UTCEPSS rescore
  40. 2026-07-23 14:16 UTCEPSS rescore
  41. 2026-07-23 02:17 UTCEG score recompute
  42. 2026-07-22 23:04 UTCEG score recompute
  43. 2026-07-22 14:06 UTCEPSS rescore
  44. 2026-07-22 14:06 UTCEPSS rescore
  45. 2026-07-21 15:23 UTCEPSS rescore
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  47. 2026-07-20 17:05 UTCEPSS rescore
  48. 2026-07-19 14:29 UTCEPSS rescore
  49. 2026-07-19 14:29 UTCEPSS rescore
  50. 2026-07-19 02:27 UTCEPSS rescore
  51. 2026-07-19 02:27 UTCEPSS rescore
  52. 2026-07-18 10:03 UTCEPSS rescore
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  54. 2026-07-16 17:00 UTCEPSS rescore
  55. 2026-07-15 01:58 UTCEPSS rescore
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  57. 2026-07-13 22:28 UTCEPSS rescore
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  59. 2026-07-13 06:11 UTCEPSS rescore
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  61. 2026-07-12 05:44 UTCEPSS rescore
  62. 2026-07-11 08:25 UTCEPSS rescore
  63. 2026-07-11 08:25 UTCEPSS rescore
  64. 2026-07-09 22:17 UTCOSV refresh
  65. 2026-07-09 19:08 UTCEPSS rescore
  66. 2026-07-08 15:13 UTCEPSS rescore
  67. 2026-07-07 13:44 UTCEPSS rescore
  68. 2026-07-06 16:25 UTCEPSS rescore
  69. 2026-07-06 02:21 UTCEPSS rescore
  70. 2026-07-05 02:28 UTCEPSS rescore
  71. 2026-07-04 06:29 UTCEPSS rescore
  72. 2026-07-01 15:04 UTCEPSS rescore
  73. 2026-06-30 23:21 UTCEPSS rescore
  74. 2026-06-30 23:20 UTCEPSS rescore
  75. 2026-06-29 14:04 UTCEPSS rescore

Related CVEs(same product)

Frequently asked(5)

What is CVE-2022-50747?
CVE-2022-50747 is a high vulnerability published on December 24, 2025. 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…
When was CVE-2022-50747 disclosed?
CVE-2022-50747 was first published in the National Vulnerability Database on December 24, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-50747 actively exploited?
CVE-2022-50747 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 88.6% of all scored CVEs.
What is the CVSS score of CVE-2022-50747?
CVE-2022-50747 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2022-50747?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50747, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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