CVE-2025-21931

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 4.9% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-04-01 15:41Z1 YR AGO

Last updated

2026-05-23 15:57Z3 MO AGO

Reserved

2024-12-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-667Improper LockingClass

Data version

5.2

Document digest

19fa1f2955673f0af6299db6ed974d78cb0dae84f36fc67a93e6c52a61788886

• git.kernel.orghttps://git.kernel.org/stable/c/3926b572fd073491bde13ec42ee08ac1b337bf4d
• git.kernel.orghttps://git.kernel.org/stable/c/93df6da64b004f75d307ed08d3f0f1020280d339
• git.kernel.orghttps://git.kernel.org/stable/c/576a2f4c437c19bec7d05d05b5990f178d2b0f40
• git.kernel.orghttps://git.kernel.org/stable/c/629dfc6ba5431056701d4e44830f3409b989955a
• git.kernel.orghttps://git.kernel.org/stable/c/af288a426c3e3552b62595c6138ec6371a17dbba
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/08/msg00010.html