CVE-2026-53167

Name	CVE-2026-53167
Description	In the Linux kernel, the following vulnerability has been resolved: fuse: limit FUSE_NOTIFY_RETRIEVE to uptodate folios FUSE_NOTIFY_RETRIEVE must be limited to uptodate folios; !uptodate folios can contain uninitialized data. Since FUSE_NOTIFY_RETRIEVE is intended to only return data that is already in the page cache and not wait for data from the FUSE daemon, treat !uptodate folios as if they weren't present. This only has security impact on systems that don't enable automatic zero-initialization of all page allocations via CONFIG_INIT_ON_ALLOC_DEFAULT_ON or init_on_alloc=1.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-6381-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	vulnerable
	bullseye (security)	5.10.259-1	vulnerable
	bookworm	6.1.170-3	vulnerable
	bookworm (security)	6.1.176-1	vulnerable
	trixie	6.12.86-1	vulnerable
	trixie (security)	6.12.95-1	fixed
	forky	7.0.13-1	fixed
	sid	7.1.3-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
linux	source	trixie	6.12.95-1		DSA-6381-1
linux	source	(unstable)	7.0.13-1

https://git.kernel.org/linus/4e3d1b2c48ca6c55f1e9ca7f8dccc76f120f276c (7.1-rc7)