CVE-2026-31589

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

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 36.8% 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

Modified. 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 14:42Z4 MO AGO

Last updated

2026-08-05 12:23Z1 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-416Use After FreeVariant
• CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

13531acde73ac6082b014b3c7b3e6ec72fde073d71dc4378608867739efa3665

• git.kernel.orghttps://git.kernel.org/stable/c/efc52947247a21bbf79059539bbbd40f4ea76f00
• git.kernel.orghttps://git.kernel.org/stable/c/b667df39d98a7a24be7c2a40ff0863dac1ad2cd7
• git.kernel.orghttps://git.kernel.org/stable/c/c330e65ea59c4805d6ab6757c4ddfe8c63acef31
• git.kernel.orghttps://git.kernel.org/stable/c/615d9bb2ccad42f9e21d837431e401db2e471195