CVE-2025-21637

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

0.21% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 11.6% 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 2026-07-30.

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

2025-01-19 10:17Z1 YR AGO

Last updated

2026-08-05 11:53Z1 MO AGO

Reserved

2024-12-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

740b183f40b073fe8c5bbe7cbd2bf983ab6e5d3dbcb37a971a8c0eaa3cf5e29c

• git.kernel.orghttps://git.kernel.org/stable/c/0a0966312ac3eedd7f5f2a766ed4702df39a9a65
• git.kernel.orghttps://git.kernel.org/stable/c/e919197fb8616331f5dc81e4c3cc3d12769cb725
• git.kernel.orghttps://git.kernel.org/stable/c/55627918febdf9d71107a1e68d1528dc591c9a15
• git.kernel.orghttps://git.kernel.org/stable/c/5b77d73f3be5102720fb685b9e6900e3500e1096
• git.kernel.orghttps://git.kernel.org/stable/c/c10377bbc1972d858eaf0ab366a311b39f8ef1b6
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00001.html