CVE-2025-39880

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

0.32% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 24.6% 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 2026-07-30.

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

2025-09-23 06:00Z11 MO AGO

Last updated

2026-08-05 12:05Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-704Incorrect Type Conversion or CastClass
• CWE-843Access of Resource Using Incompatible Type ('Type Confusion')Base

Data version

5.2

Document digest

ed07fe87ad6d3adf0ebc6a5c6bc9d98ee6e183223f639b06af09ddf515ffc2e1

• git.kernel.orghttps://git.kernel.org/stable/c/ea12ab684f8ae8a6da11a22c78d94a79e2163096
• git.kernel.orghttps://git.kernel.org/stable/c/591ea9c30737663a471b2bb07b27ddde86b020d5
• git.kernel.orghttps://git.kernel.org/stable/c/23538cfbeed87159a5ac6c61e7a6de3d8d4486a8
• git.kernel.orghttps://git.kernel.org/stable/c/35dbbc3dbf8bccb2d77c68444f42c1e6d2d27983
• git.kernel.orghttps://git.kernel.org/stable/c/6bd8b56899be0b514945f639a89ccafb8f8dfaef
• git.kernel.orghttps://git.kernel.org/stable/c/cdbc9836c7afadad68f374791738f118263c5371
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.html