CVE-2026-74590

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-22. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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:

fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions

The BPF verifier and the dynptr abstraction ensure that the memory space referenced by a dynptr remains valid. They do not, however, provide any guarantee that the contents of the memory are stable. kfuncs are expected to remain memory-safe even if concurrent modifications occur.

bpf_get_fsverity_digest() didn't follow that: it could crash if arg->digest_size was concurrently modified.

Fix that by using the known-good value hash_alg->digest_size instead.

Also widen 'dynptr_sz' and 'out_digest_sz' to u64 to match the return type of __bpf_dynptr_size(). It doesn't appear that it can actually be more than INT_MAX currently (since __bpf_dynptr_data_rw() excludes file-based pointers), but the correct type might as well be used.

CVSS v3
7.8
EG Score
7.8(high)
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
3%
KEV
Not listed

Published

August 22, 2026

Last Modified

August 25, 2026

Advisory Details (4)

Auto-updated Aug 25, 2026
No patch confirmed yet.
generic

fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3e8ec7c0387273329374f5c7bd61f5f38af71fe1
generic

fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5bd63cad9df4328a184c409fbdad4f17944bcdb8
generic

fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2a5cfcad1d56e26d645b7887b0ed24c371851525
generic

fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1344b632cb5043e32939a84568125719111c5af3

Vendor Advisories for CVE-2026-74590(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 25× in last 7d / 28× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-30 00:27 UTCGHSA enrichment
  3. 2026-08-29 13:04 UTCGHSA enrichment
  4. 2026-08-29 01:34 UTCEG score recompute
  5. 2026-08-29 01:33 UTCGHSA enrichment
  6. 2026-08-28 21:42 UTCEPSS rescore
  7. 2026-08-28 14:10 UTCGHSA enrichment
  8. 2026-08-28 02:44 UTCGHSA enrichment
  9. 2026-08-27 15:22 UTCEG score recompute
  10. 2026-08-27 15:22 UTCGHSA enrichment
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-27 03:58 UTCGHSA enrichment
  13. 2026-08-26 16:36 UTCEG score recompute
  14. 2026-08-26 16:36 UTCGHSA enrichment
  15. 2026-08-26 14:47 UTCEPSS rescore
  16. 2026-08-26 05:14 UTCGHSA enrichment
  17. 2026-08-25 17:51 UTCEG score recompute
  18. 2026-08-25 17:51 UTCGHSA enrichment
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-25 06:30 UTCEG score recompute
  21. 2026-08-25 06:30 UTCGHSA enrichment
  22. 2026-08-25 05:45 UTCEG score recompute▲ 7.80
  23. 2026-08-25 05:45 UTCGHSA enrichment
  24. 2026-08-25 05:45 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  25. 2026-08-24 14:18 UTCEPSS rescore
Show 3 more
  1. 2026-08-22 16:24 UTCNVD update
  2. 2026-08-22 15:42 UTCEG score recompute
  3. 2026-08-22 15:35 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74590?
CVE-2026-74590 is a high vulnerability published on August 22, 2026. In the Linux kernel, the following vulnerability has been resolved: fsverity: Fix bpfgetfsverity_digest() dynptr assumptions The BPF verifier and the dynptr abstraction ensure that the memory space referenced by a dynptr remains valid. They do not, however, provide any guarantee that the contents…
When was CVE-2026-74590 disclosed?
CVE-2026-74590 was first published in the National Vulnerability Database on August 22, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74590 actively exploited?
CVE-2026-74590 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-74590?
CVE-2026-74590 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-74590?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74590, 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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