CVE-2025-21891

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 ImpactpartialSuccessful exploitation gives limited 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

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 9.2% 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

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

2025-03-27 14:57Z1 YR AGO

Last updated

2026-05-11 21:08Z3 MO AGO

Reserved

2024-12-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

• CWE-908Use of Uninitialized ResourceBase

Data version

5.2

Document digest

266ad8987f3899e0ed405b1305dc2a1983ff93359492e8a407fcfbe74973b91f

• git.kernel.orghttps://git.kernel.org/stable/c/5b8dea8d1612dc7151d2457d7d2e6a69820309bf
• git.kernel.orghttps://git.kernel.org/stable/c/4ec48f812804f370f622e0874e6dd8fcc58241cd
• git.kernel.orghttps://git.kernel.org/stable/c/5353fd89663c48f56bdff975c562cfe78b1a2e4c
• git.kernel.orghttps://git.kernel.org/stable/c/e2a4f76a2d8a44816ecd25bcbdb47b786d621974
• git.kernel.orghttps://git.kernel.org/stable/c/27843ce6ba3d3122b65066550fe33fb8839f8aef
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html