CVE-2026-74349

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-15. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: 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:

ocfs2: reject FITRIM ranges shorter than a cluster

ocfs2_trim_mainbm() trims the global bitmap in cluster units, but its too-short range validation only checks sb->s_blocksize.

On filesystems with a cluster size larger than the block size, a FITRIM range that is at least one block but shorter than one cluster is accepted and shifted down to len == 0. The later start + len - 1 and len -= ... arithmetic then underflows and can drive trimming past the requested range.

Reject ranges shorter than s_clustersize instead. That preserves the existing -EINVAL behavior for requests that cannot discard even one allocation unit and keeps zero-cluster trims out of the group walk.

CVSS v3
7.1
EG Score
7.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (8)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

ocfs2: reject FITRIM ranges shorter than a cluster - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e652d0f5108e447b22da4249bcd23dd1b63c73dd
generic

ocfs2: reject FITRIM ranges shorter than a cluster - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d903d59c0315f59bdf0214b4f13d71c9feb2c45c
generic

ocfs2: reject FITRIM ranges shorter than a cluster - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ca1afd88f5eaaff9168e1466e5401385edf59543
generic

ocfs2: reject FITRIM ranges shorter than a cluster - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/441abb77222f155e8d931dbabb465466db01cfd7
generic

ocfs2: reject FITRIM ranges shorter than a cluster - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3fa7139b5f42731a61f78c42433adae13f9adc21
generic

ocfs2: reject FITRIM ranges shorter than a cluster - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/346314bb0cc2fc52b50b73d6ecc62e0217455c2e
generic

ocfs2: reject FITRIM ranges shorter than a cluster - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2c13e02592b918be7725ab5965e01ef4e46c4b57
generic

ocfs2: reject FITRIM ranges shorter than a cluster - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/06c0a0431b9856506fcd9b2c1b0c6136567d756d

Vendor Advisories for CVE-2026-74349(1)

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

Data Freshness Timeline

(refreshed 27× in last 7d / 27× 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.

  1. 2026-08-21 01:33 UTCEG score recompute
  2. 2026-08-21 01:33 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 12:36 UTCGHSA enrichment
  5. 2026-08-19 23:38 UTCEG score recompute
  6. 2026-08-19 23:37 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 10:38 UTCGHSA enrichment
  9. 2026-08-18 21:37 UTCGHSA enrichment
  10. 2026-08-18 08:22 UTCGHSA enrichment
  11. 2026-08-17 19:24 UTCEG score recompute
  12. 2026-08-17 19:24 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 06:26 UTCEG score recompute
  15. 2026-08-17 06:26 UTCGHSA enrichment
  16. 2026-08-17 05:56 UTCEG score recompute▲ 7.10
  17. 2026-08-17 05:56 UTCGHSA enrichment
  18. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 7.1 · severity → HIGH
  19. 2026-08-17 05:26 UTCEG score recompute
  20. 2026-08-17 05:26 UTCGHSA enrichment
  21. 2026-08-17 05:25 UTCMITRE cvelistV5
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 02:15 UTCEPSS rescore
  25. 2026-08-15 06:23 UTCNVD update
Show 2 more
  1. 2026-08-15 06:15 UTCEG score recompute
  2. 2026-08-15 06:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74349?
CVE-2026-74349 is a high vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: ocfs2: reject FITRIM ranges shorter than a cluster ocfs2trimmainbm() trims the global bitmap in cluster units, but its too-short range validation only checks sb->s_blocksize. On filesystems with a cluster size larger than the block…
When was CVE-2026-74349 disclosed?
CVE-2026-74349 was first published in the National Vulnerability Database on August 15, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74349 actively exploited?
CVE-2026-74349 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 97.3% of all scored CVEs.
What is the CVSS score of CVE-2026-74349?
CVE-2026-74349 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-74349?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74349, 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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