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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Mixed 3 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 0.6.0-1 |
| bookworm | Affected | — |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-35355
- https://github.com/uutils/coreutils/pull/10067
- https://github.com/uutils/coreutils/commit/b5bbabc18a1121908848d836f869a4e98eb63886
- https://github.com/uutils/coreutils
- https://github.com/uutils/coreutils/releases/tag/0.6.0
- https://security-tracker.debian.org/tracker/CVE-2026-35355
- https://github.com/advisories/GHSA-v24v-f45g-w7jf
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.