Description
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.
References
https://github.com/uutils/coreutils/issues/10011
https://github.com/uutils/coreutils/issues/10011
CVSS impact metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
4.7 · Medium
Information
Source identifier
Vulnerability status
Analyzed
Published
2026-04-22T17:16:38.267Z
5 months agoLast modified
2026-06-17T10:40:27.223Z
3 months ago