CVE-2025-21923

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 ImpacttotalSuccessful exploitation gives total 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

0.20% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 11.0% of scored records. A rank, not a probability.

NVD base score

7.8 (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:H/I:H/A:H

NVD analysis status

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

Red Hat severity

Important. 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 15:40Z1 YR AGO

Last updated

2026-08-05 11:55Z2 MO AGO

Reserved

2024-12-29

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-416Use After FreeVariant

Data version

5.2

Document digest

56b2373936c3dddcab0afeca2a1d9a1cbdac2044fe1a7bfe8b9cfe8ba86f33e0

• git.kernel.orghttps://git.kernel.org/stable/c/026714ec7546de741826324a6a1914c91024d06c
• git.kernel.orghttps://git.kernel.org/stable/c/a899adf7063c6745aaff1ec869f3c7f6329ed0a1
• git.kernel.orghttps://git.kernel.org/stable/c/ea3f18d2f02629653b7bfe42607737ccd1343e54
• git.kernel.orghttps://git.kernel.org/stable/c/e53fc232a65f7488ab75d03a5b95f06aaada7262