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GHSA-6g8r-74qp-6859

uutils coreutils has a Time-of-check Time-of-use (TOCTOU) Race Condition

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-35376

Packages

EcosystemPackageAffectedFixed in
crates.io coreutils <= 0.8.0 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.