Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

CVE record · CVE-2026-89476

sctp: fix stream->outcnt underflow on duplicate RECONF responses

CVSS 7.5 HighEPSS 0.0070 · 53rd percentile

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 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 to before 041f7df5a929d3e7435dd8387e8ea17f2d412b7d git
  • affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 to before 59f61c39cb99ee1737bd742a20094fe5653389bb git
  • affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 to before 793519e343867ee9a3e84f6cac07f81f2aec7b5d git
  • affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 to before 092acd3c55a4077b00489064615d8d2d898daf91 git
  • affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 to before 2d867663c563e8009257b9edf9c8ec75d9bbf19a git
  • affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 to before d02a5794c3deedcb8476d017fcee2b7aaedab2e1 git
  • affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 to before 8320cbd81bc21a1ca6ebdf70ad610ebc5ef1bd68 git
  • affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 to before 3faf13aff243ca9f78d08b1a2956ef5a6fc77b6e git
Other versions: unaffected
Linux Linux
  • affected 4.12
  • unaffected before 4.12 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-2026-89476
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
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (Linux)
  • CISA KEV Not listed.
  • EPSS 0.0070, the 53rd 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.