Description

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.

INFO

Published Date :

2026-04-22T16:07:51.755Z

Last Modified :

2026-04-22T18:12:21.735Z

Source :

canonical
AFFECTED PRODUCTS

The following products are affected by CVE-2026-35346 vulnerability.

Vendors Products
Uutils
  • Coreutils
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-35346.

URL Resource
https://github.com/uutils/coreutils/issues/10192 cve-icon cve-icon cve-icon
https://github.com/uutils/coreutils/pull/10206 cve-icon cve-icon
https://github.com/uutils/coreutils/releases/tag/0.6.0 cve-icon cve-icon
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