CVE record · CVE-2026-89634

smb: client: fix ALIGN() overflow in symlink_data() error context loop

CVSS 9.1 CriticalCriticalEPSS 0.0069 · 53rd percentile

Critical, because:

CVSS score 9.1: 9.0 or more.

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
Vendor	Product	Versions
Linux	Linux	affected 76894f3e2f71177747b8b4763fb180e800279585 to before 2b4a25baa0b936fef6915c0459925077b324ecaf git affected 76894f3e2f71177747b8b4763fb180e800279585 to before b89d678f9eafcf8d74885983166ba26b40a04ea0 git affected 76894f3e2f71177747b8b4763fb180e800279585 to before 657372ba6ea50b4474d2a6a610097eae8cd1f3e9 git affected 76894f3e2f71177747b8b4763fb180e800279585 to before 1f824f61d1df52392eaf0b74dfa5659d724fde30 git affected 76894f3e2f71177747b8b4763fb180e800279585 to before 62a3025983c8c735a3c6fc85a59316f31b59af07 git affected 76894f3e2f71177747b8b4763fb180e800279585 to before 62656b024efc21c3230eade1a847f25871c3d2bb git affected 2d046892a493d9760c35fdaefc3017f27f91b621 git affected 6.0.16 to before 6.1 semver Other versions: unaffected
Linux	Linux	affected 6.1 unaffected before 6.1 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-2026-89634
CNA: Linux
Tags: Linux kernel
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

Score	Rating	CVSS	Vector	Source
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 0.0069, 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.