CVE-2023-53866

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

0.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 7.0% 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

Deferred. NVD last modified this record on 2026-08-04.

Red Hat severity

Low. 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

2025-12-09 01:30Z8 MO AGO

Last updated

2026-08-05 09:16Z1 MO AGO

Reserved

2025-12-09

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-820Missing SynchronizationBase

Data version

5.2

Document digest

10d45e777dbcacd130d6cc4d6a3ba9bbba72f7e593db10afbf10251232188321

• git.kernel.orghttps://git.kernel.org/stable/c/9a9942cbdb7c3f41452f7bc4a9ff9f0b45eb3651
• git.kernel.orghttps://git.kernel.org/stable/c/37a3eb6054d17676ce2a0bb5dd1fbf7733ecfa7d
• git.kernel.orghttps://git.kernel.org/stable/c/aa9ff6a4955fdba02b54fbc4386db876603703b7