high7.0
CVE-2026-35352
A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils.
Impact
A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils. The utility creates a FIFO and then performs a path-based chmod to set permissions. A local attacker with write access to the parent directory can swap the newly created FIFO for a symbolic link between these two operations. This redirects the chmod call to an arbitrary file, potentially enabling privilege escalation if the utility is run with elevated privileges.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rust | coreutils | <= 0.8.0 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Uutils | Coreutils | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-9gh9-hwpr-rvqq
- https://nvd.nist.gov/vuln/detail/CVE-2026-35352
- https://github.com/uutils/coreutils/issues/10020
- http://www.openwall.com/lists/oss-security/2026/05/04/4
- http://www.openwall.com/lists/oss-security/2026/05/04/5
- http://www.openwall.com/lists/oss-security/2026/05/04/6