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CVE record · CVE-2026-31637

rxrpc: reject undecryptable rxkad response tickets

CVSS 9.8 CriticalCriticalEPSS 0.0059 · 48th 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 24 Apr 2026, 14:44 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 17926a79320afa9b95df6b977b40cca6d8713cea to before 252157d939d179b5d767cb860ff8fa7f8723b67a git
  • affected 17926a79320afa9b95df6b977b40cca6d8713cea to before a75b3b361dd481d942c5f259a82d59718a41092c git
  • affected 17926a79320afa9b95df6b977b40cca6d8713cea to before b3a808cd0790b5075aaa2bc3588edf02cd71d352 git
  • affected 17926a79320afa9b95df6b977b40cca6d8713cea to before 47073aab8a3a5a7b41c9bd37d2a3dcbeeccd6c8a git
  • affected 17926a79320afa9b95df6b977b40cca6d8713cea to before a149dcae23309df9de1c3b6b5d468610ef5ab7de git
  • affected 17926a79320afa9b95df6b977b40cca6d8713cea to before 22f6258e7b31dba9bf88dce4e3ee7f0f20072e60 git
  • affected 17926a79320afa9b95df6b977b40cca6d8713cea to before 58fcd1b156152613ba00a064a129fb69507ddd7d git
  • affected 17926a79320afa9b95df6b977b40cca6d8713cea to before fe4447cd95623b1cfacc15f280aab73a6d7340b2 git
Other versions: unaffected
Linux Linux
  • affected 2.6.22
  • unaffected before 2.6.22 semver
  • unaffected 5.10.258 to 5.10.*, inclusive semver
  • unaffected 5.15.209 to 5.15.*, inclusive semver
  • unaffected 6.1.175 to 6.1.*, inclusive semver
  • unaffected 6.6.135 to 6.6.*, inclusive semver
  • unaffected 6.12.82 to 6.12.*, inclusive semver
  • unaffected 6.18.23 to 6.18.*, inclusive semver
  • unaffected 6.19.13 to 6.19.*, inclusive semver
  • unaffected 7.0 to *, inclusive original_commit_for_fix
Other versions: affected
Identifiers
CVE-2026-31637
CNA
Linux
Weakness (CWE)
CWE-754
Tags
Published
24 Apr 2026
Updated
19 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 0.0059, the 48th percentile, on 6 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 24 Apr 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.