CVE-2026-31566

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

0.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 2.7% 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

Analyzed. 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

2026-04-24 14:35Z4 MO AGO

Last updated

2026-08-05 12:23Z1 MO AGO

Reserved

2026-03-09

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-416Use After FreeVariant
• CWE-821Incorrect SynchronizationBase

Data version

5.2

Document digest

6a6fcb1d72269bec80aff9982e58d962f72080e54335c9b42e0c8d47c065de95

• git.kernel.orghttps://git.kernel.org/stable/c/bc7760c107dc08ef3e231d72c492e67b0a86848b
• git.kernel.orghttps://git.kernel.org/stable/c/e23602eb0779760544314ed3905fa6a89a4e4070
• git.kernel.orghttps://git.kernel.org/stable/c/138e42be35ff2ce6572ae744de851ea286cf3c69
• git.kernel.orghttps://git.kernel.org/stable/c/39820864eacd886f1a6f817414fb8f9ea3e9a2b4
• git.kernel.orghttps://git.kernel.org/stable/c/42d248726a0837640452b71c5a202ca3d35239ec
• git.kernel.orghttps://git.kernel.org/stable/c/7150850146ebfa4ca998f653f264b8df6f7f85be