CVE-2026-35355

Name	CVE-2026-35355
Description	The install utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file installation. The implementation unlinks an existing destination file and then recreates it using a path-based operation without the O_EXCL flag. A local attacker can exploit the window between the unlink and the subsequent creation to swap the path with a symbolic link, allowing them to redirect privileged writes to overwrite arbitrary system files.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rust-coreutils (PTS)	bookworm	0.0.17-2	vulnerable
	trixie	0.0.30-2	vulnerable
	sid	0.9.0-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rust-coreutils	source	(unstable)	0.6.0-1

Notes

[trixie] - rust-coreutils <no-dsa> (Minor issue)
[bookworm] - rust-coreutils <no-dsa> (Minor issue)
https://github.com/uutils/coreutils/pull/10067
Fixed by: https://github.com/uutils/coreutils/commit/b5bbabc18a1121908848d836f869a4e98eb63886 (0.6.0)