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 di…
Exact source revision recorded 27 Oct 2026 09:03:12 UTC. It does not establish the source's current position. Latest evidence.
nvd · CVE-2026-35352
PublishedA 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.
NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.
Source analysis status: Modified
Weakness classifications: CWE-367
Original publisher date fields
published: 2026-04-22T17:16:37.597
lastModified: 2026-10-26T21:10:00.170
1 source CPE criteria · context only
- cpe:2.3:a:uutils:coreutils:-:*:*:*:*:rust:*:*
The original JSON retains the logical configuration operators, exclusions and version bounds.
- Source published
- 22 Apr 2026 17:16:37 UTC
- Source modified
- 26 Oct 2026 21:10:00 UTC
- Observed here
- 27 Oct 2026 09:03:12 UTC
- Source terms
- NIST NVD usage terms; underlying source attribution retained
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS 3.1 · [email protected] · Secondary · 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H