CVE record · CVE-2026-93269

ext4: fix circular lock dependency in ext4_ext_migrate

No CVSS scoreEPSS 0.0020 · 9th percentile

Published by the CVE Program (CNA: Linux) at 24 Sept 2026, 15:52 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 cb85f4d23f794e24127f3e562cb3b54b0803f456 to before f204882d5eaca09f7848f081c9c9b5bbf2234895 git affected cb85f4d23f794e24127f3e562cb3b54b0803f456 to before 452950461241dfed8b1d32e94b227db38c99c5af git affected cb85f4d23f794e24127f3e562cb3b54b0803f456 to before ada23457d4748d6e9c36c6f871fc29a6f558c48c git affected cb85f4d23f794e24127f3e562cb3b54b0803f456 to before e4223231b6860141813637a6413c2371ae4d6fa8 git affected cb85f4d23f794e24127f3e562cb3b54b0803f456 to before 32f7ab52875ec7f800ca67e7176e5743a84baddf git affected cb85f4d23f794e24127f3e562cb3b54b0803f456 to before a897682793eba5de51ee6f3152760374afa629cf git affected eb799e163dc2bc1ea0a4820b66f79d32a5e907df git affected bcc1eab71a67c46b9e24544ac7923f44444174ce git affected 8cf20fb73e73a4c4df0328b5297842c5ef34fdd9 git affected e5d25003d059649e18a249635ed5ca7a7b1de5ad git affected 69f8a7991fd93c49096ddd11574db3e7df238b7b git affected 4.9.215 to before 4.10 semver and 4 more Other versions: unaffected
Linux	Linux	affected 5.6 unaffected before 5.6 semver unaffected 6.1.191 to 6.1., inclusive semver unaffected 6.6.157 to 6.6., inclusive semver unaffected 6.12.110 to 6.12., inclusive semver unaffected 6.18.52 to 6.18., inclusive semver unaffected 7.2.6 to 7.2., inclusive semver unaffected 7.3 to , inclusive original_commit_for_fix Other versions: affected

Identifiers: CVE-2026-93269
CNA: Linux
Tags: Linux kernel
Published: 24 Sept 2026
Updated: 30 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Linux kernel ext4 filesystem code, from 5.6 until the fixes, can deadlock through a circular lock dependency in ext4_ext_migrate. The source gives few details on what triggers it or who can. Upgrade to 6.1.191, 6.6.157, 6.12.110, 6.18.52, or a later release in the matching series.

Written 12 Nov 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

No source has published a CVSS score for this record yet.

CISA KEV Not listed.
EPSS 0.0020, the 9th percentile, on 12 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 24 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.