CVE-2026-74669

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-22. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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:

ipvs: clear IPv4 options after rebasing tunnel ICMP errors

ip_vs_in_icmp() rebases an skb from the outer ICMP packet to the quoted original request before passing it to icmp_send(). However, IPCB(skb)->opt still describes the outer IPv4 header.

A timestamp option in the outer header can therefore leave an offset that points into the quoted transport header after the rebase. __ip_options_echo() treats a byte at that stale location as the option length and copies it into the fixed-size option storage on the __icmp_send() stack, causing a stack out-of-bounds write.

Clear the stale option metadata after resetting the network header. Keep the remaining control block fields, including the ingress interface used by the ICMP response path.

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
42%
KEV
Not listed

Published

August 22, 2026

Last Modified

August 25, 2026

Advisory Details (8)

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

ipvs: clear IPv4 options after rebasing tunnel ICMP errors - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ed246dd85ebf27c1f6b7897834d40786c0ca3006
generic

ipvs: clear IPv4 options after rebasing tunnel ICMP errors - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e0ba936287dfe9783426aac27e5fd76fe35b38c9
generic

ipvs: clear IPv4 options after rebasing tunnel ICMP errors - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c9413b50204738fbc429bb86bf01353c393a6c28
generic

ipvs: clear IPv4 options after rebasing tunnel ICMP errors - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/79ffa99202c944467e28b13b513bf2998732edff
generic

ipvs: clear IPv4 options after rebasing tunnel ICMP errors - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/75eec935444db4af2123e0491936f6e273d7ea00
generic

ipvs: clear IPv4 options after rebasing tunnel ICMP errors - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6f46fc460e9316062bdcdf89199eb5d7a33da33b
generic

ipvs: clear IPv4 options after rebasing tunnel ICMP errors - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/384b4dae14277d369221d187e9b3af56c79d2e50
generic

ipvs: clear IPv4 options after rebasing tunnel ICMP errors - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/37c61b3745129cbd682c557b51345828120972e5

Vendor Advisories for CVE-2026-74669(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 43× in last 7d / 46× 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 02:41 UTCEG score recompute
  2. 2026-08-30 02:41 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-29 22:24 UTCGHSA enrichment
  5. 2026-08-29 18:07 UTCGHSA enrichment
  6. 2026-08-29 13:48 UTCGHSA enrichment
  7. 2026-08-29 09:29 UTCGHSA enrichment
  8. 2026-08-29 05:11 UTCGHSA enrichment
  9. 2026-08-29 00:49 UTCEG score recompute
  10. 2026-08-29 00:49 UTCGHSA enrichment
  11. 2026-08-28 21:42 UTCEPSS rescore
  12. 2026-08-28 17:34 UTCGHSA enrichment
  13. 2026-08-28 12:54 UTCGHSA enrichment
  14. 2026-08-28 08:35 UTCGHSA enrichment
  15. 2026-08-28 04:09 UTCGHSA enrichment
  16. 2026-08-27 23:51 UTCGHSA enrichment
  17. 2026-08-27 19:34 UTCGHSA enrichment
  18. 2026-08-27 15:17 UTCEG score recompute
  19. 2026-08-27 15:17 UTCGHSA enrichment
  20. 2026-08-27 14:25 UTCEPSS rescore
  21. 2026-08-27 11:00 UTCGHSA enrichment
  22. 2026-08-27 06:43 UTCGHSA enrichment
  23. 2026-08-27 02:24 UTCGHSA enrichment
  24. 2026-08-26 22:08 UTCGHSA enrichment
  25. 2026-08-26 17:51 UTCEG score recompute
Show 21 more
  1. 2026-08-26 17:51 UTCGHSA enrichment
  2. 2026-08-26 14:47 UTCEPSS rescore
  3. 2026-08-26 12:31 UTCGHSA enrichment
  4. 2026-08-26 08:13 UTCGHSA enrichment
  5. 2026-08-26 03:56 UTCGHSA enrichment
  6. 2026-08-25 23:39 UTCGHSA enrichment
  7. 2026-08-25 19:22 UTCGHSA enrichment
  8. 2026-08-25 15:05 UTCEG score recompute
  9. 2026-08-25 15:05 UTCGHSA enrichment
  10. 2026-08-25 13:49 UTCEPSS rescore
  11. 2026-08-25 10:46 UTCEG score recompute
  12. 2026-08-25 10:46 UTCGHSA enrichment
  13. 2026-08-25 06:29 UTCEG score recompute
  14. 2026-08-25 06:29 UTCGHSA enrichment
  15. 2026-08-25 05:55 UTCEG score recompute▲ 9.80
  16. 2026-08-25 05:55 UTCGHSA enrichment
  17. 2026-08-25 05:55 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  18. 2026-08-24 14:18 UTCEPSS rescore
  19. 2026-08-22 16:24 UTCNVD update
  20. 2026-08-22 15:41 UTCEG score recompute
  21. 2026-08-22 15:35 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74669?
CVE-2026-74669 is a critical vulnerability published on August 22, 2026. In the Linux kernel, the following vulnerability has been resolved: ipvs: clear IPv4 options after rebasing tunnel ICMP errors ipvsin_icmp() rebases an skb from the outer ICMP packet to the quoted original request before passing it to icmp_send(). However, IPCB(skb)->opt still describes the outer…
When was CVE-2026-74669 disclosed?
CVE-2026-74669 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-2026-74669 actively exploited?
CVE-2026-74669 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 58.4% of all scored CVEs.
What is the CVSS score of CVE-2026-74669?
CVE-2026-74669 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-74669?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74669, 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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