DEBIAN-CVE-2026-56391
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-56391
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56391.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-56391
- Upstream
- Published
- 2026-07-24T09:16:25Z
- Modified
- 2026-09-14T17:03:20Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
GNU coreutils uniq is vulnerable to an out‑of‑bounds read due to incorrect handling of multibyte input when the -w (--check-chars) option is used. The find_field() function miscalculates the byte length of characters by repeatedly processing a fixed pointer instead of advancing through the input, resulting in an inflated length value. This incorrect length is later used in a memcmp operation, causing reads beyond the allocated buffer when processing crafted multibyte input. When running GNU coreutils uniq with attacker-provided arguments, this behavior leads to a crash and potential adjacent heap memory exposure. This issue has been fixed in the commit d64e35a8a4c0e4608321433e0d84d917e4e36371.
- References
Affected packages
Debian:12 / coreutils
Package
- Name
- coreutils
- Purl
- pkg:deb/debian/coreutils?arch=source&distro=bookworm
Debian:13 / coreutils
Package
- Name
- coreutils
- Purl
- pkg:deb/debian/coreutils?arch=source&distro=trixie
Debian:14 / coreutils
Package
- Name
- coreutils
- Purl
- pkg:deb/debian/coreutils?arch=source&distro=forky