CVE-2025-14104 Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames
A heap buffer overread in util-linux allows attackers to read memory or cause crashes when processing long usernames in SUID utilities.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-14104?
CVE-2025-14104 is a medium-severity memory corruption vulnerability in Cert Manager support for Red Hat OpenShift release 1.18, published on 5 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2025-14104?
Linux distribution packages (40)
libblkid AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libblkid-devel AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libfdisk AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libfdisk-devel AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libmount AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libmount-devel AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libsmartcols AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libsmartcols-devel AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libuuid AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libuuid-devel AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
python3-libmount AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
util-linux AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
util-linux-core AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
uuidd AlmaLinux:10 | All versions | 2.40.2-15.el10_1 |
libblkid AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libblkid-devel AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libfdisk AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libfdisk-devel AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libmount AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libmount-devel AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libsmartcols AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libsmartcols-devel AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libuuid AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libuuid-devel AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
python3-libmount AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
util-linux AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
util-linux-user AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
uuidd AlmaLinux:8 | All versions | 2.32.1-48.el8_10 |
libblkid AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
libblkid-devel AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
libfdisk AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
libfdisk-devel AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
libmount AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
libmount-devel AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
libsmartcols AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
libsmartcols-devel AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
libuuid AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
libuuid-devel AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
python3-libmount AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
util-linux AlmaLinux:9 | All versions | 2.37.4-21.el9_7 |
How do I fix CVE-2025-14104?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-14104 being exploited?
There is no known exploitation of CVE-2025-14104 in the wild and no public exploit code.
Sources
Also known as ALPINE-CVE-2025-14104, ALSA-2026:1696, ALSA-2026:1852, ALSA-2026:1913, AZL-72305, AZL-72307 and 23 more.