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CVE record · CVE-2026-89771

ring-buffer: Fix subbuf resize race with ring buffer readers

CVSS 7.8 HighEPSS 0.0012 · 1st percentile

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:47 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 f9b94daa542a8d2532f0930f01cd9aec2d19621b to before 6d666f0b8b36c0765cf19fbe6de5a7ba5a73aad9 git
  • affected f9b94daa542a8d2532f0930f01cd9aec2d19621b to before 50f4a793c4ff24826efb0ac700989a5063cc53df git
  • affected f9b94daa542a8d2532f0930f01cd9aec2d19621b to before 0c7c517827a453128a8f58bfd849546a29813b27 git
  • affected f9b94daa542a8d2532f0930f01cd9aec2d19621b to before 8a5f63637890f03177146efddaba5ec7a1b4d61f git
Other versions: unaffected
Linux Linux
  • affected 6.8
  • unaffected before 6.8 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-2026-89771
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
7.8 High 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CNA (Linux)
  • CISA KEV Not listed.
  • EPSS 0.0012, the 1st 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.