CVE-2025-39966

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

0.10% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 1.1% of scored records. A rank, not a probability.

NVD base score

7.0 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/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

2025-10-15 07:55Z10 MO AGO

Last updated

2026-08-05 12:06Z1 MO AGO

Reserved

2025-04-16

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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
• CWE-416Use After FreeVariant

Data version

5.2

Document digest

95b65c16d5c2bb74aea3d47761c0d36c5e20abb51c7302b23ea4423ebb99d93a

• git.kernel.orghttps://git.kernel.org/stable/c/17195a7d754a5c6a31888702ca93f6f08f3383ad
• git.kernel.orghttps://git.kernel.org/stable/c/e4825368285e33d6360c6c6a6a10d2d83da06e55
• git.kernel.orghttps://git.kernel.org/stable/c/4e034bf045b12852a24d5d33f2451850818ba0c1