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CVE record · CVE-2026-89593

hugetlb: only adjust reservation during unmapping if mapcount is 0

CVSS 7.1 HighEPSS 0.0013 · 2nd percentile

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:44 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 df7a6d1f64056aec572162c5d35ed9ff86ece6f3 to before b0b1b9ca80b795ed2223e76dd787db7067121fb9 git
  • affected df7a6d1f64056aec572162c5d35ed9ff86ece6f3 to before a3c65af20cceb7f997847727636b4017326f845d git
  • affected df7a6d1f64056aec572162c5d35ed9ff86ece6f3 to before 0f001491e5a2ec69aa9d5dd6b799e5742245f9ea git
  • affected df7a6d1f64056aec572162c5d35ed9ff86ece6f3 to before 5120b1e048d48596ffaec1a8412012a91adba73b git
Other versions: unaffected
Linux Linux
  • affected 6.9
  • unaffected before 6.9 semver
  • unaffected 6.12.110 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-2026-89593
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
7.1 High 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CNA (Linux)
  • CISA KEV Not listed.
  • EPSS 0.0013, the 2nd 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.