rust-coreutils: The comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines
CVE-2026-35346 is fixed in rust-coreutils on 1 platform by DEBIAN-CVE-2026-35346 (version 0.6.0-1), released April 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.
The comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation uses String::from_utf8_lossy(), which replaces invalid UTF-8 byte sequences with the Unicode replacement character (U+FFFD). This behavior differs from GNU comm, which processes raw bytes and preserves the original input. This results in corrupted output when the utility is used to compare binary files or files using non-UTF-8 legacy encodings.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| rust-coreutils · Debian 14 | 0.6.0-1 | DEBIAN-CVE-2026-35346 | Apr 22, 2026 |
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