CVE-2026-35347 (GCVE-0-2026-35347)

Vulnerability from cvelistv5 – Published: 2026-04-22 16:07 – Updated: 2026-04-22 18:11
VLAI?
Title
uutils coreutils comm Silent Data Loss or Denial of Service via Improper Input Validation
Summary
The comm utility in uutils coreutils incorrectly consumes data from non-regular file inputs before performing comparison operations. The are_files_identical function opens and reads from both input paths to compare content without first verifying if the paths refer to regular files. If an input path is a FIFO or a pipe, this pre-read operation drains the stream, leading to silent data loss before the actual comparison logic is executed. Additionally, the utility may hang indefinitely if it attempts to pre-read from infinite streams like /dev/zero.
Severity ?
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
Uutils coreutils Affected: 0 , < 0.6.0 (semver)
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Credits
Zellic
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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