CVE-2025-21803

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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 14.1% 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

Analyzed. NVD last modified this record on 2026-06-17.

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

2025-02-27 20:00Z1 YR AGO

Last updated

2026-05-11 21:06Z3 MO AGO

Reserved

2024-12-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-662Improper SynchronizationClass

Data version

5.2

Document digest

df20ec8b991058bc658c2340b11c6952343b4cab65d74a5c2cda98ace9a70dc0

• git.kernel.orghttps://git.kernel.org/stable/c/d49ab6857d98266010f3446c9c2063014db5b654
• git.kernel.orghttps://git.kernel.org/stable/c/194d26a5a43c26dc98a9b4e2c1d521dcb84dd1bf
• git.kernel.orghttps://git.kernel.org/stable/c/8682a71a7f6de7c683f31b4334b04e19685a05f9
• git.kernel.orghttps://git.kernel.org/stable/c/26c0a2d93af55d30a46d5f45d3e9c42cde730168