CVE-2025-14104
util-linux: util-linux: Heap buffer overread in setpwnam() when processing 256-byte usernames
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 5, 2025
Updated · October 15, 2026
Description
A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte usernames, specifically within the setpwnam() function, affecting SUID (Set User ID) login-utils utilities writing to the password database.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 6.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
CWE-125 · Out-of-bounds Read