CVE-2025-21739

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

0.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 12.2% 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

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

2025-02-27 02:12Z1 YR AGO

Last updated

2026-06-01 16:05Z3 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

ecd7bea1ea63d45f482be87df11ba6df0c36104050d97964b7733cf68852cb53

• git.kernel.orghttps://git.kernel.org/stable/c/0a6895c03b1f439236e2d22b1a69ebfc1eb9d5ea
• git.kernel.orghttps://git.kernel.org/stable/c/d06eb2620d3bf16056b8b7ea3744dbb5e30512f4
• git.kernel.orghttps://git.kernel.org/stable/c/0dc539b888fb5f56b6eeddd95433eab557d4b0c1
• git.kernel.orghttps://git.kernel.org/stable/c/0c77c0d754fe83cb154715fcfec6c3faef94f207
• git.kernel.orghttps://git.kernel.org/stable/c/9c185beae09a3eb85f54777edafa227f7e03075d
• git.kernel.orghttps://git.kernel.org/stable/c/f8fb2403ddebb5eea0033d90d9daae4c88749ada