The cp utility in uutils coreutils is vulnerable to an information disclosure race condition. Destination files are initially created with umask-derived permissions (e.g., 0644) before being restricted to their final mode (e.g., 0600) later in the process. A local attacker can race to open the file during this window; once obtained, the file descriptor remains valid and readable even after the permissions are tightened, exposing sensitive or private file contents.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/uutils/coreutils/issues/10011 Exploit, Issue Tracking, Vendor Advisory
- https://github.com/uutils/coreutils/issues/10011 Exploit, Issue Tracking, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 4.7 · uutilsNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:uutils:coreutils:-:*:*:*:*:rust:*:*
References 2
- https://github.com/uutils/coreutils/issues/10011 Exploit, Issue Tracking, Vendor Advisory
- https://github.com/uutils/coreutils/issues/10011 Exploit, Issue Tracking, Vendor Advisory