CVE-2022-50567

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-10-22. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
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:

fs: jfs: fix shift-out-of-bounds in dbAllocAG

Syzbot found a crash : UBSAN: shift-out-of-bounds in dbAllocAG. The underlying bug is the missing check of bmp->db_agl2size. The field can be greater than 64 and trigger the shift-out-of-bounds.

Fix this bug by adding a check of bmp->db_agl2size in dbMount since this field is used in many following functions. The upper bound for this field is L2MAXL2SIZE - L2MAXAG, thanks for the help of Dave Kleikamp. Note that, for maintenance, I reorganized error handling code of dbMount.

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
6%
KEV
Not listed

Published

October 22, 2025

Last Modified

August 5, 2026

Advisory Details (9)

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

fs: jfs: fix shift-out-of-bounds in dbAllocAG - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eea87acb6027be3dd4d3c57186bb22800d57fdda
generic

fs: jfs: fix shift-out-of-bounds in dbAllocAG - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d3b486946a4e62c7ef6023f7d9c1d049051384ba
generic

fs: jfs: fix shift-out-of-bounds in dbAllocAG - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/898f706695682b9954f280d95e49fa86ffa55d08
generic

fs: jfs: fix shift-out-of-bounds in dbAllocAG - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/67973caae78e21ee46a7281aaa8ca364eb9c444f
generic

fs: jfs: fix shift-out-of-bounds in dbAllocAG - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3e997e4ce8ae7ab89d72334120f6aee49c5bbdbd
generic

fs: jfs: fix shift-out-of-bounds in dbAllocAG - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/359616ce587e524107730504891afa4b1a8be58c
generic

fs: jfs: fix shift-out-of-bounds in dbAllocAG - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3115313cf03113e87c87adee18ee49a20bbdb9ba
generic

fs: jfs: fix shift-out-of-bounds in dbAllocAG - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2c575c8905f7a8b32d5611b91856b69bac2a5bf1
generic

fs: jfs: fix shift-out-of-bounds in dbAllocAG - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0536f76a2bca83d1a3740517ba22cc93a44b3099

Vendor Advisories for CVE-2022-50567(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.

Data Freshness Timeline

(refreshed 14× in last 7d / 52× 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 147 total refreshes for this CVE.

  1. 2026-08-05 19:15 UTCEPSS rescore
  2. 2026-08-05 09:19 UTCEG score recompute
  3. 2026-08-05 09:19 UTCGHSA enrichment
  4. 2026-08-04 15:07 UTCEPSS rescore
  5. 2026-08-04 10:56 UTCEG score recompute
  6. 2026-08-04 10:56 UTCGHSA enrichment
  7. 2026-08-04 10:35 UTCEPSS rescore
  8. 2026-08-04 09:28 UTCEG score recompute▲ 7.80
  9. 2026-08-04 09:28 UTCGHSA enrichment
  10. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  11. 2026-08-03 10:33 UTCEPSS rescore
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  24. 2026-07-23 02:17 UTCEG score recompute
  25. 2026-07-22 23:04 UTCEG score recompute
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  24. 2026-07-10 03:53 UTCOSV refresh
  25. 2026-07-09 19:08 UTCEPSS rescore
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  50. 2026-06-21 14:31 UTCOSV refresh
  51. 2026-06-21 01:58 UTCEPSS rescore
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Related CVEs(same product)

Frequently asked(5)

What is CVE-2022-50567?
CVE-2022-50567 is a high vulnerability published on October 22, 2025. In the Linux kernel, the following vulnerability has been resolved: fs: jfs: fix shift-out-of-bounds in dbAllocAG Syzbot found a crash : UBSAN: shift-out-of-bounds in dbAllocAG. The underlying bug is the missing check of bmp->db_agl2size. The field can be greater than 64 and trigger the…
When was CVE-2022-50567 disclosed?
CVE-2022-50567 was first published in the National Vulnerability Database on October 22, 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-2022-50567 actively exploited?
CVE-2022-50567 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 94.3% of all scored CVEs.
What is the CVSS score of CVE-2022-50567?
CVE-2022-50567 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2022-50567?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50567, 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.

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