CVE-2026-31608

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

0.45% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 39.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/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 14:42Z6 MO AGO

Last updated

2026-08-05 12:23Z2 MO AGO

Reserved

2026-03-09

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-415Double FreeVariant
• CWE-1341Multiple Releases of Same Resource or HandleBase

Data version

5.2

Document digest

a6cc80de5bf4874d1de9cb32eef20d05d822f788804a482ae85bc243b4f2eb71

• git.kernel.orghttps://git.kernel.org/stable/c/6968c91fab05b8fc4d6700e0cf34472bb422df25
• git.kernel.orghttps://git.kernel.org/stable/c/2ba03f46132b0d1a7bafb86e1ef61951a2254023
• git.kernel.orghttps://git.kernel.org/stable/c/830de6eeb9db4cb7e758201fb99328ef4ca4b032
• git.kernel.orghttps://git.kernel.org/stable/c/84ff995ae826aa6bbcc6c7b9ea569ff67c021d72