CVE-2026-74545

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: 0%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:

rtase: fix double free of multi-frag skb on DMA map failure

In rtase_start_xmit(), when the head buffer DMA mapping fails after rtase_xmit_frags() has mapped all fragments, the error path clears the fragment descriptors with rtase_tx_clear_range(), which frees the skb through the last-frag slot and accounts tx_dropped. Control then falls through to the common error label, which frees the same skb a second time and counts it again.

Return right after clearing the fragments when the skb owns frags; the no-frag case still drops through and frees the head skb once.

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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (4)

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

rtase: fix double free of multi-frag skb on DMA map failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/de691dc3227b061c4d0beba9f0128fe1ff33dd68
generic

rtase: fix double free of multi-frag skb on DMA map failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/db986098f30881fafcc752800aa3b13fd289c922
generic

rtase: fix double free of multi-frag skb on DMA map failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6fb7b769d6ed6d1d2e02af4a80e57a2477f35086
generic

rtase: fix double free of multi-frag skb on DMA map failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4f09172aff5f73a5e914f4fbc0d00a1c2ea9f7cb

Vendor Advisories for CVE-2026-74545(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 42× in last 7d / 42× 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. 2026-08-20 17:55 UTCGHSA enrichment
  2. 2026-08-20 14:02 UTCGHSA enrichment
  3. 2026-08-20 10:03 UTCGHSA enrichment
  4. 2026-08-20 06:10 UTCGHSA enrichment
  5. 2026-08-20 02:17 UTCGHSA enrichment
  6. 2026-08-19 22:24 UTCGHSA enrichment
  7. 2026-08-19 18:28 UTCEG score recompute
  8. 2026-08-19 18:28 UTCGHSA enrichment
  9. 2026-08-19 17:04 UTCEPSS rescore
  10. 2026-08-19 14:34 UTCGHSA enrichment
  11. 2026-08-19 10:33 UTCGHSA enrichment
  12. 2026-08-19 06:39 UTCGHSA enrichment
  13. 2026-08-19 02:41 UTCGHSA enrichment
  14. 2026-08-18 22:46 UTCGHSA enrichment
  15. 2026-08-18 18:50 UTCGHSA enrichment
  16. 2026-08-18 14:57 UTCEG score recompute
  17. 2026-08-18 14:57 UTCGHSA enrichment
  18. 2026-08-18 13:49 UTCEPSS rescore
  19. 2026-08-18 13:49 UTCEPSS rescore
  20. 2026-08-18 10:28 UTCGHSA enrichment
  21. 2026-08-18 06:35 UTCGHSA enrichment
  22. 2026-08-18 02:42 UTCGHSA enrichment
  23. 2026-08-17 22:48 UTCGHSA enrichment
  24. 2026-08-17 18:54 UTCGHSA enrichment
  25. 2026-08-17 14:09 UTCEG score recompute
Show 17 more
  1. 2026-08-17 14:09 UTCGHSA enrichment
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-17 10:16 UTCEG score recompute
  4. 2026-08-17 10:16 UTCGHSA enrichment
  5. 2026-08-17 06:23 UTCEG score recompute
  6. 2026-08-17 06:23 UTCGHSA enrichment
  7. 2026-08-17 05:54 UTCEG score recompute▲ 9.80
  8. 2026-08-17 05:54 UTCGHSA enrichment
  9. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  10. 2026-08-17 05:39 UTCEG score recompute
  11. 2026-08-17 05:39 UTCGHSA enrichment
  12. 2026-08-17 05:39 UTCMITRE cvelistV5
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-15 13:27 UTCNVD update
  16. 2026-08-15 12:38 UTCEG score recompute
  17. 2026-08-15 12:37 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74545?
CVE-2026-74545 is a critical vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: rtase: fix double free of multi-frag skb on DMA map failure In rtasestartxmit(), when the head buffer DMA mapping fails after rtasexmitfrags() has mapped all fragments, the error path clears the fragment descriptors with…
When was CVE-2026-74545 disclosed?
CVE-2026-74545 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-2026-74545 actively exploited?
CVE-2026-74545 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 61.9% of all scored CVEs.
What is the CVSS score of CVE-2026-74545?
CVE-2026-74545 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-74545?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74545, 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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