PatchTheCVECVE-2026-35358: The cp utility in uutils coreutils, when performing recursive copies (-R), incorrectly treats character and bl
CVE-2026-35358 is a medium-severity flaw (CVSS 4.4) affecting coreutils. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 read
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.4 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 93%) |
| CISA exploited list | No |
| Weakness | CWE-706 |
| Published | 2026-04-22 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-35358?
coreutils: upgrade to 0.7.0. Exact commands for each OS are on this page.
Is CVE-2026-35358 being exploited?
CVE-2026-35358 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-35358 affect?
CVE-2026-35358 affects coreutils. Severity is medium (CVSS 4.4). 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 d
How urgent is CVE-2026-35358?
Priority 22/100. Public exploit reference
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