CVE-2026-35357
Publication date 22 April 2026
Last updated 11 November 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| rust-coreutils | 26.10 stonking |
Fixed in 0.9.0-2ubuntu1
|
| 26.04 LTS resolute |
Fixed in 0.10.0-1ubuntu2~26.04.1
|
|
| 24.04 LTS noble |
Vulnerable
|
|
| 22.04 LTS jammy | Not in release |
Notes
john-breton
Fixed in 0.10.0-1ubuntu2~26.04.1 in resolute-updates (LP: #2166202), but not yet in the -security pocket.
Severity score breakdown
CVSS version: CVSS v3.0
Base score
4.7 · Medium
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References
Related Ubuntu Security Notices (USN)
- USN-9041-1
- uutils coreutils vulnerabilities
- 11 November 2026