CVE-2025-40251

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

0.15% 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 2026-07-30.

Red Hat severity

Moderate. 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

2025-12-04 16:08Z9 MO AGO

Last updated

2026-08-05 12:08Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-476NULL Pointer DereferenceBase
• CWE-911Improper Update of Reference CountBase

Data version

5.2

Document digest

89758754e5e2dc169a3a7a3f0facf98209a2b6f48e3c1c40ad91c5580ad813ad

• git.kernel.orghttps://git.kernel.org/stable/c/90e51e20bcec9bff5b2421ce1bd95704764655f5
• git.kernel.orghttps://git.kernel.org/stable/c/715d9cda646a8a38ea8b2bb5afb679a7464055e2
• git.kernel.orghttps://git.kernel.org/stable/c/c70df6c17d389cc743f0eb30160e2d6bc6910db8
• git.kernel.orghttps://git.kernel.org/stable/c/542f45486f1ce2d2dde75bd85aca0389ef7046c3
• git.kernel.orghttps://git.kernel.org/stable/c/f94c1a114ac209977bdf5ca841b98424295ab1f0
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-253495.html