CVE-2025-40320

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

0.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 34.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. 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

2025-12-08 00:46Z9 MO AGO

Last updated

2026-08-05 12:09Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

aa76a2cdb2f8d75a360d1e337e51762f0acd2162ba5b5b30be6d512c63d23217

• git.kernel.orghttps://git.kernel.org/stable/c/939c4e33005e2a56ea8fcedddf0da92df864bd3b
• git.kernel.orghttps://git.kernel.org/stable/c/327f89c21601ebb7889f8c97754b76f08ce95a0c
• git.kernel.orghttps://git.kernel.org/stable/c/b556c278d43f4707a9073ca74d55581b4f279806
• git.kernel.orghttps://git.kernel.org/stable/c/5c76f9961c170552c1d07c830b5e145475151600