CVE-2026-74376

CRITICALPre-NVD 9.89.8
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-15. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: 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:

md/raid10: reset read_slot when reusing r10bio for discard

put_all_bios() always drops devs[i].bio, but it only drops devs[i].repl_bio when r10_bio->read_slot < 0. If discard reuses an r10bio that was previously used for a read, read_slot can still be non-negative, and discard cleanup can skip bio_put() on repl_bio.

Reset read_slot to -1 when preparing an r10bio for discard so the replacement bio is always released correctly.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
41%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (7)

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

md/raid10: reset read_slot when reusing r10bio for discard - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eb04e3e9c14ed15914f5fd2eae8b6435f54f095f
generic

md/raid10: reset read_slot when reusing r10bio for discard - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ce3030e92f14362880055de5fe3c258971118853
generic

md/raid10: reset read_slot when reusing r10bio for discard - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b7313f23ea5a79b199a007bfad64a866cc2c22e7
generic

md/raid10: reset read_slot when reusing r10bio for discard - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/742e4afd247d9c972695227716b03d432a7e1d26
generic

md/raid10: reset read_slot when reusing r10bio for discard - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6b8a26af065ddc93de2aa5c9f0df98dce9723442
generic

md/raid10: reset read_slot when reusing r10bio for discard - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/561c9711e4f545d6464a023168bdee03b00fa945
generic

md/raid10: reset read_slot when reusing r10bio for discard - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3cb2a606ce4902eceabe68338df0653312f861f8

Vendor Advisories for CVE-2026-74376(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 48× in last 7d / 48× 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 07:30 UTCGHSA enrichment
  2. 2026-08-21 03:29 UTCGHSA enrichment
  3. 2026-08-20 23:28 UTCEG score recompute
  4. 2026-08-20 23:28 UTCGHSA enrichment
  5. 2026-08-20 22:56 UTCEPSS rescore
  6. 2026-08-20 19:28 UTCGHSA enrichment
  7. 2026-08-20 15:27 UTCGHSA enrichment
  8. 2026-08-20 11:25 UTCGHSA enrichment
  9. 2026-08-20 07:24 UTCGHSA enrichment
  10. 2026-08-20 03:24 UTCGHSA enrichment
  11. 2026-08-19 23:23 UTCGHSA enrichment
  12. 2026-08-19 19:22 UTCEG score recompute
  13. 2026-08-19 19:22 UTCGHSA enrichment
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 15:20 UTCGHSA enrichment
  16. 2026-08-19 11:18 UTCGHSA enrichment
  17. 2026-08-19 07:17 UTCGHSA enrichment
  18. 2026-08-19 03:16 UTCGHSA enrichment
  19. 2026-08-18 23:12 UTCGHSA enrichment
  20. 2026-08-18 19:11 UTCGHSA enrichment
  21. 2026-08-18 15:11 UTCEG score recompute
  22. 2026-08-18 15:10 UTCGHSA enrichment
  23. 2026-08-18 13:49 UTCEPSS rescore
  24. 2026-08-18 13:49 UTCEPSS rescore
  25. 2026-08-18 11:09 UTCGHSA enrichment
Show 23 more
  1. 2026-08-18 07:03 UTCGHSA enrichment
  2. 2026-08-18 03:00 UTCGHSA enrichment
  3. 2026-08-17 22:59 UTCGHSA enrichment
  4. 2026-08-17 18:56 UTCGHSA enrichment
  5. 2026-08-17 14:28 UTCEG score recompute
  6. 2026-08-17 14:28 UTCGHSA enrichment
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-17 10:27 UTCEG score recompute
  9. 2026-08-17 10:27 UTCGHSA enrichment
  10. 2026-08-17 06:26 UTCEG score recompute
  11. 2026-08-17 06:26 UTCGHSA enrichment
  12. 2026-08-17 05:56 UTCEG score recompute 9.80
  13. 2026-08-17 05:56 UTCGHSA enrichment
  14. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  15. 2026-08-17 05:26 UTCEG score recompute
  16. 2026-08-17 05:26 UTCGHSA enrichment
  17. 2026-08-17 05:24 UTCMITRE cvelistV5
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 02:15 UTCEPSS rescore
  21. 2026-08-15 06:23 UTCNVD update
  22. 2026-08-15 06:14 UTCEG score recompute
  23. 2026-08-15 06:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74376?
CVE-2026-74376 is a critical vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: md/raid10: reset read_slot when reusing r10bio for discard putallbios() always drops devs[i].bio, but it only drops devs[i].replbio when r10bio->read_slot < 0. If discard reuses an r10bio that was previously used for a read,…
When was CVE-2026-74376 disclosed?
CVE-2026-74376 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-2026-74376 actively exploited?
CVE-2026-74376 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 58.7% of all scored CVEs.
What is the CVSS score of CVE-2026-74376?
CVE-2026-74376 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-74376?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74376, 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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