CVE-2026-35358
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-35358
Vendor advisory: security@ubuntu.com — https://github.com/uutils/coreutils/releases/tag/0.7.0
Vendor advisory: security@ubuntu.com — https://github.com/uutils/coreutils/pull/11163
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | affected | |
| debian | sid | fixed | 0.7.0-1 |
| debian | trixie | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| uutils | coreutils | {"endExcluding":"0.7.0"} | 0.7.0 |
References
- https://github.com/uutils/coreutils/issues/9746
- https://github.com/uutils/coreutils/pull/11163
- https://github.com/uutils/coreutils/releases/tag/0.7.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-35358
- https://github.com/uutils/coreutils/commit/e6a3bb596f149628ba973eec3d099f3bb69f2464
- https://github.com/uutils/coreutils
- https://security-tracker.debian.org/tracker/CVE-2026-35358
- https://github.com/advisories/GHSA-67hp-f6hq-2h6g
CWEs
CWE-706
Verify integrity in audit chain (admin only). AS-IS.