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.

Related CPE's


References


https://github.com/uutils/coreutils/issues/10011

ExploitIssue TrackingVendor Advisory

https://github.com/uutils/coreutils/issues/10011

ExploitIssue TrackingVendor Advisory

Weaknesses



CWE-367

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

[email protected]

Vulnerability status

Analyzed

Published

2026-04-22T17:16:38.267Z

5 months ago

Last modified

2026-06-17T10:40:27.223Z

3 months ago