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.
Affected products
uutils: coreutils
References2
- github.com/uutils/coreutils/issues/10011 ExploitIssue TrackingVendor Advisory
- github.com/uutils/coreutils/issues/10011 ExploitIssue TrackingVendor Advisory
Metrics
- CVSS 3.1
-
4.7
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 0 · as of 13 November 2026
- CWE
- CWE-367
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