CVE-2025-40342

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

0.36% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 28.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:A/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

2025-12-09 04:09Z8 MO AGO

Last updated

2026-08-05 12:09Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-820Missing SynchronizationBase

Data version

5.2

Document digest

5df96034a04b574edcdf5a66ad974fda8e26c7f9cc323ee79f8103534ff9941c

• git.kernel.orghttps://git.kernel.org/stable/c/de3d91af47bc015031e7721b100a29989f6498a5
• git.kernel.orghttps://git.kernel.org/stable/c/e8cde03de8674b05f2c5e0870729049eba517800
• git.kernel.orghttps://git.kernel.org/stable/c/4253e0a4546138a2bf9cb6acf66b32fee677fc7c
• git.kernel.orghttps://git.kernel.org/stable/c/25f4bf1f7979a7871974fd36c79d69ff1cf4b446
• git.kernel.orghttps://git.kernel.org/stable/c/9950af4303942081dc8c7a5fdc3688c17c7eb6c0
• git.kernel.orghttps://git.kernel.org/stable/c/a2f7fa75c4a2a07328fa22ccbef461db76790b55
• git.kernel.orghttps://git.kernel.org/stable/c/891cdbb162ccdb079cd5228ae43bdeebce8597ad