Vulnerability in Uutils Coreutils
CVE-2026-35358
The cp utility in uutils coreutils, when performing recursive copies (-R), incorrectly treats character and block device nodes as stream sources rather than preserving them. Because the implementation reads bytes into regular files at the destination instead of using mknod, device semantics are destroyed (e.g., /dev/null becomes a regular file). This behavior can lead to runtime denial of service through disk exhaustion or process hangs when reading from unbounded device nodes.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (6.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Uutils Coreutils — versions 0
Weakness classification (CWE)
References
- github.com/uutils/coreutils/pull/11163 (Patch, patch, Issue Tracking)
- github.com/uutils/coreutils/issues/9746 (issue-tracking, Exploit, Issue Tracking)
- github.com/uutils/coreutils/releases/tag/0.7.0 (vendor-advisory, Release Notes)
Frequently asked questions
- What is CVE-2026-35358?
- CVE-2026-35358 is a medium-severity vulnerability in Uutils Coreutils, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 4.4/10. Published 2026-04-22.
- How severe is CVE-2026-35358?
- Medium severity. CVSS v3 base score is 4.4 out of 10.