CVE-2025-21938

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

0.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 30.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/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

2025-04-01 15:41Z1 YR AGO

Last updated

2026-08-05 11:55Z1 MO AGO

Reserved

2024-12-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.2

Document digest

772dbc8e113221e706fccecf816a22813df254db9c533956986b474da41572e2

• git.kernel.orghttps://git.kernel.org/stable/c/f1404f368c40fc6a068dad72e4ee0824ee6a78ee
• git.kernel.orghttps://git.kernel.org/stable/c/f3fcdb2de9fdbed9d8c6a8eb2c5fbd7d6f54a4d8
• git.kernel.orghttps://git.kernel.org/stable/c/4b228dae3d2cc6d9dce167449cd8fa9f028e9376
• git.kernel.orghttps://git.kernel.org/stable/c/125ccafe6dd062901b5a0c31ee9038740fc8859e
• git.kernel.orghttps://git.kernel.org/stable/c/022bfe24aad8937705704ff2e414b100cf0f2e1a
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html