Hi,

The following vulnerability was published for rust-coreutils.

CVE-2026-35376[0]:
| A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the
| chcon utility of uutils coreutils during recursive operations. The
| implementation resolves recursive targets using a fresh path lookup
| (via fts_accpath) rather than binding the traversal and label
| application to the specific directory state encountered during
| traversal. Because these operations are not anchored to file
| descriptors, a local attacker with write access to a directory tree
| can exploit timing-sensitive rename or symbolic link races to
| redirect a privileged recursive relabeling operation to unintended
| files or directories. This vulnerability breaks the hardening
| expectations for SELinux administration workflows and can lead to
| the unauthorized modification of security labels on sensitive system
| objects.

https://github.com/uutils/coreutils/pull/11402


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-35376
https://www.cve.org/CVERecord?id=CVE-2026-35376

Please adjust the affected versions in the BTS as needed.

These CVEs are all fixed in the upstream 0.10.0 release, which was
uploaded to unstable as rust-coreutils 0.10.0-1:

#1135993 CVE-2026-35344 dd: propagate truncate errors on regular files
#1135994 CVE-2026-35345 tail: treat a watched file replaced by a symlink
as untailable
#1136042 CVE-2026-35352 mkfifo: drop path-based chmod, closing the
TOCTOU race
#1136044 CVE-2026-35360 touch: create without O_TRUNC so a raced open no
longer truncates
#1136202 CVE-2026-35374 split: harden output open path against TOCTOU
target swaps
#1136203 CVE-2026-35376 chcon: anchor recursive relabel resolution to
the traversal dirfd
#1136207 CVE-2026-35377 env: keep backslashes literal in single quotes,
matching GNU

Cheers
Sylvestre