CVE-2026-64266

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-64266

Key Details

CVE	CVE-2026-64266
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-416 (Use After Free)

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

fuse: re-lock request before returning from fuse_ref_folio()

fuse_ref_folio() unlocks the request but does not re-lock it before

returning. fuse_chan_abort() can end the request and the async end

callback (eg fuse_writepage_free()) can free the args while the

subsequent copy chain logic after fuse_ref_folio() accesses them,

leading to use-after-free issues.

Fix this by locking the request in fuse_ref_folio() before returning. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-64266
CVE	https://www.cve.org/CVERecord?id=CVE-2026-64266

Source

Reference

NVD

CVE