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CVE record · CVE-2026-89478

sctp: drop a chunk if its transport was removed

CVSS 9.8 CriticalCriticalEPSS 0.0051 · 44th 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 11 Sept 2026, 19:43 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 3fc072e7cb4a0ff251d13cfc2d24f62489cd9386 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before d7cb5ad832095dc4becfdb2a36007ffd50e49fb0 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0422b092a3d43ca462932ff9f747731ca078d1d4 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 928fd7920ba37cc5637a211b9be979083413a2fa git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before c6c86a5e62a4fec36692ddd64b9144b660f71f96 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1035bdef1efb9b1076d1a57b81e08c637ff08ecc git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 3537961df2163258bddc230db0e18dc14e925ea6 git
  • affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 03a9d10ecf71f54b2af8020935f2033d4a132be5 git
Other versions: unaffected
Linux Linux
  • affected 2.6.12
  • unaffected before 2.6.12 semver
  • unaffected 5.10.270 to 5.10.*, inclusive semver
  • unaffected 5.15.221 to 5.15.*, inclusive semver
  • unaffected 6.1.188 to 6.1.*, inclusive semver
  • unaffected 6.6.157 to 6.6.*, inclusive semver
  • unaffected 6.12.109 to 6.12.*, inclusive semver
  • unaffected 6.18.50 to 6.18.*, inclusive semver
  • unaffected 7.2.4 to 7.2.*, inclusive semver
  • unaffected 7.3 to *, inclusive original_commit_for_fix
Other versions: affected
Identifiers
CVE-2026-89478
CNA
Linux
Tags
Published
11 Sept 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 0.0051, the 44th percentile, on 14 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 11 Sept 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.