CVE-2026-35346 uutils coreutils comm Silent Data Corruption via Lossy UTF-8 Normalization

The comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation uses String::fromutf8lossy, which replaces invalid UTF-8 byte sequences with the Unicode replacement character U+FFFD. This behavior differs from GNU comm, whic...

CVE-2026-35346

The CVE-2026-35346 entry concerns the uutils coreutils comm implementation; it is affected by a flaw where the program uses String::from_utf8_lossy() and, as a result, applies lossy UTF-8 conversion to all output lines. This causes data corruption when comparing binary files or files with non-UTF...