CVE-2025-21671

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 11.8% 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

2025-01-31 11:25Z1 YR AGO

Last updated

2026-05-11 21:04Z3 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

fc254af9e3e53a858455b742e0821608d55e82f22a9cd7c16196a7a07435d95e

• git.kernel.orghttps://git.kernel.org/stable/c/fe3de867f94819ba0f28e035c0b0182150147d95
• git.kernel.orghttps://git.kernel.org/stable/c/571d3f6045cd3a6d9f6aec33b678f3ffe97582ef
• git.kernel.orghttps://git.kernel.org/stable/c/902ef8f16d5ca77edc77c30656be54186c1e99b7
• git.kernel.orghttps://git.kernel.org/stable/c/212fe1c0df4a150fb6298db2cfff267ceaba5402
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00001.html