CVE-2025-21937

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.20% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 10.3% 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

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

53660a5141bad1f5a3d3d8e79a56f4ac97f64710e1245fb7b746a59f228f4c71

• git.kernel.orghttps://git.kernel.org/stable/c/37785a01040cb5d11ed0ddbcbf78491fcd073161
• git.kernel.orghttps://git.kernel.org/stable/c/c5845c73cbacf5704169283ef29ca02031a36564
• git.kernel.orghttps://git.kernel.org/stable/c/88310caff68ae69d0574859f7926a59c1da2d60b
• git.kernel.orghttps://git.kernel.org/stable/c/69fb168b88e4d62cb31cdd725b67ccc5216cfcaf
• git.kernel.orghttps://git.kernel.org/stable/c/f2176a07e7b19f73e05c805cf3d130a2999154cb
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html