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…
Exact source revision recorded 1 Nov 2026 06:09:00 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-24998
PublishedThe 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.
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Original publisher date fields
datePublished: Apr 22, 2026, 4:08:22 PM
dateUpdated: Apr 22, 2026, 5:56:03 PM
- Source published
- Apr 22, 2026, 4:08:22 PM (timezone not stated)
- Source modified
- Apr 22, 2026, 5:56:03 PM (timezone not stated)
- Observed here
- 1 Nov 2026 06:09:00 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
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EUVD CVSS 3.1 · 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L