CVE record · CVE-2026-90264

btrfs: always wait for ordered extents to avoid OE races

No CVSS scoreEPSS 0.0021 · 10th percentile

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:08 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 10b1abc1d0c8ae25c2b9ac465515717c68ffff05 to before fa9f6e1958bb05b8a660d9cf2b6f51dee0077290 git affected 097b159d43407b4ea0e5d14ae58a3bbfa5865a24 to before 043b6fd9706e4335851f317352d2717ad40e6d83 git affected ccd5c23122b01de646c80485e2fadac82d1aab62 to before de8f5cb3cb611f96909797b4b017831f5141cbbe git affected c3a3d3986719026c85950bfa6f41a251fc46e16f to before 58ce50b1802a446d3b26df1b9c58be1ab8913d0e git affected ff66fe6662330226b3f486014c375538d91c44aa to before aaac9b352f7f53f5d2f7e58e612d67d2a2bf7094 git affected ff66fe6662330226b3f486014c375538d91c44aa to before ec78575dde998c21be7e0cb2503b5620f34b6255 git affected 4b5875cbb85dbf4d11385eb0a7a589c086d76d42 git affected b8df7f486a4617d3096b8fa27148cfa54b1d6a8d git affected 6.1.178 to before 6.1.191 semver affected 6.6.145 to before 6.6.160 semver affected 6.12.97 to before 6.12.114 semver affected 6.18.40 to before 6.18.52 semver and 2 more Other versions: unaffected
Linux	Linux	affected 7.2 unaffected before 7.2 semver unaffected 6.1.191 to 6.1., inclusive semver unaffected 6.6.160 to 6.6., inclusive semver unaffected 6.12.114 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-2026-90264
CNA: Linux
Tags: Linux kernel
Published: 17 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 btrfs filesystem code is affected in several version ranges, with a fix listed for 7.2 and for the 6.1, 6.6, 6.12 and 6.18 stable series. A race can occur between a direct write that finishes short and a later buffered write to the same range, where an overlapping ordered extent is inserted and triggers a kernel panic. The source does not state what an attacker needs beyond the ability to issue these writes, or what impact beyond a crash is possible. Users should upgrade to a fixed kernel version for their 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 0.0021, the 10th percentile, on 13 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 17 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.