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CVE record · CVE-2026-80844

xfrm: ah6: validate routing header segments_left

No CVSS scoreEPSS 0.0043 · 38th percentile

Published by the CVE Program (CNA: Linux) at 4 Sept 2026, 15:54 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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 2dc650956e4e163b879b3fb1027f9557abc5c985 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 48b0e36cf54358276ee7aa897034c973097d2bc9 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1b7e066eabcc7d6d8f476c34739b45932f2f4c31 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before f00df8500e5a36ba70d336fd34bd2152ea074e5f git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1516e31ac458a738be485620579d8f7fb2700fcb git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 6733ae71268a27d598cfb3f3339a3c950b9b656d git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0bf11081ad3753938a2b48723ce6298dbac743a1 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 46640c814f25f096b0b0045ca50e1b7030cd8a30 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 7bad4bda74dc4713f398d3b7624ff05478e3a568 git
Other versions: unaffected
Linux Linux
  • affected 2.6.12
  • unaffected before 2.6.12 semver
  • unaffected 5.10.269 to 5.10.*, inclusive semver
  • unaffected 5.15.220 to 5.15.*, inclusive semver
  • unaffected 6.1.187 to 6.1.*, inclusive semver
  • unaffected 6.6.156 to 6.6.*, inclusive semver
  • unaffected 6.12.108 to 6.12.*, inclusive semver
  • unaffected 6.18.49 to 6.18.*, inclusive semver
  • unaffected 7.1.13 to 7.1.*, inclusive semver
  • unaffected 7.2.3 to 7.2.*, inclusive semver
  • unaffected 7.3 to *, inclusive original_commit_for_fix
Other versions: affected
Identifiers
CVE-2026-80844
CNA
Linux
Tags
Published
4 Sept 2026
Updated
6 Nov 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

No source has published a CVSS score for this record yet.

  • CISA KEV Not listed.
  • EPSS 0.0043, the 38th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 4 Sept 2026, 15:54 UTC Confirmed by the CVE List
  2. 4 Sept 2026, 16:18 UTC Confirmed by NVD

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.