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CVE record · CVE-2026-89649

ceph: bound xattr value length in __build_xattrs()

CVSS 9.1 CriticalCriticalEPSS 0.0068 · 52nd percentile

Critical, because:

  • CVSS score 9.1: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:45 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 355da1eb7a1f91c276b991764e951bbcd8047599 to before 848b80ca6b410f350d08b8ac19a00ef88223f2ea git
  • affected 355da1eb7a1f91c276b991764e951bbcd8047599 to before 01e3f19c301d492e12f16b3b463ac14d7cf3ebe7 git
  • affected 355da1eb7a1f91c276b991764e951bbcd8047599 to before cb0cd79ae80476d1bc06bd9678484b6736f19588 git
  • affected 355da1eb7a1f91c276b991764e951bbcd8047599 to before 61f085cb8976c9cebc90e1a8933e4cc1ad8b0fce git
  • affected 355da1eb7a1f91c276b991764e951bbcd8047599 to before 38be2f3c41ecaba58bb92dc16603e09ba9fd64f1 git
  • affected 355da1eb7a1f91c276b991764e951bbcd8047599 to before 1dd356310b1660215f9a3626580bf8b363ef981e git
  • affected 355da1eb7a1f91c276b991764e951bbcd8047599 to before b12b3320c81fd72ab36388fb2445fec9c3038f10 git
  • affected 355da1eb7a1f91c276b991764e951bbcd8047599 to before 68d541754d6cd3bb98d1fd8314f57e5eb533557d git
Other versions: unaffected
Linux Linux
  • affected 2.6.34
  • unaffected before 2.6.34 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-2026-89649
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
9.1 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CNA (Linux)
  • CISA KEV Not listed.
  • EPSS 0.0068, the 52nd 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.