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CVE record · CVE-2026-74597

ip6_tunnel: clear skb2->cb[] in ip6ip6_err()

CVSS 9.8 CriticalCriticalEPSS 0.0054 · 46th percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: Linux) at 22 Aug 2026, 15:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Linux Linux
  • affected e490d1d85cf5e191791979e5f260d32eb4f703a8 to before 44fe898df302e91c5ee5acbc71ffa74e78e6c183 git
  • affected e490d1d85cf5e191791979e5f260d32eb4f703a8 to before 0dadb0620ab65949a8bc2439dd28ea3c942fe87d git
  • affected e490d1d85cf5e191791979e5f260d32eb4f703a8 to before b6816536a2990c0db44a26130a03e40b441e829b git
  • affected e490d1d85cf5e191791979e5f260d32eb4f703a8 to before 64e41736a26f37ab6215bc2e6df125df05aceb08 git
  • affected e490d1d85cf5e191791979e5f260d32eb4f703a8 to before 484134e1eb07d700a73b1e4bbf3fb503e299be60 git
  • affected e490d1d85cf5e191791979e5f260d32eb4f703a8 to before 4eb15c465337b18f44716c499cd6ad63eee0ad54 git
  • affected e490d1d85cf5e191791979e5f260d32eb4f703a8 to before fbf40faa0414b753212494ad197542002e66ed9e git
  • affected e490d1d85cf5e191791979e5f260d32eb4f703a8 to before f803c086399da277b5d0ff36a107d0f162751800 git
Other versions: unaffected
Linux Linux
  • affected 2.6.22
  • unaffected before 2.6.22 semver
  • unaffected 5.10.265 to 5.10.*, inclusive semver
  • unaffected 5.15.216 to 5.15.*, inclusive semver
  • unaffected 6.1.183 to 6.1.*, inclusive semver
  • unaffected 6.6.152 to 6.6.*, inclusive semver
  • unaffected 6.12.104 to 6.12.*, inclusive semver
  • unaffected 6.18.45 to 6.18.*, inclusive semver
  • unaffected 7.1.9 to 7.1.*, inclusive semver
  • unaffected 7.2 to *, inclusive original_commit_for_fix
Other versions: affected
Identifiers
CVE-2026-74597
CNA
Linux
Tags
Published
22 Aug 2026
Updated
16 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (Linux)
  • CISA KEV Not listed.
  • EPSS 0.0054, the 46th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 22 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.