CVE-2026-31436

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

0.46% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 37.7% 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

2026-04-22 13:53Z4 MO AGO

Last updated

2026-08-05 12:22Z1 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-476NULL Pointer DereferenceBase
• CWE-910Use of Expired File DescriptorBase

Data version

5.2

Document digest

34814b27046b5ce026fe081b1e6c8ed6b7a0259bc4ed7d546120a7a0540e1678

• git.kernel.orghttps://git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074
• git.kernel.orghttps://git.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644
• git.kernel.orghttps://git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99
• git.kernel.orghttps://git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27