CVE-2026-35347 — uutils coreutils comm Silent Data Loss or Denial of Service via Improper Input Validation
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 r…
Published: 2026-04-22 · CVSS: 4.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7