CVE-2026-31657

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

0.40% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 33.0% 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

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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 14:45Z4 MO AGO

Last updated

2026-08-05 12:24Z1 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-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

96d8655e5f30cc34ab24908470fb98b52b6a66c5aabb622a7a1a81730f59ad8f

• git.kernel.orghttps://git.kernel.org/stable/c/5202f071b367ffbc8e279fc7a00db14f5e587f52
• git.kernel.orghttps://git.kernel.org/stable/c/69d1ce9c72eca91203ffdb8d08bacd511100aec6
• git.kernel.orghttps://git.kernel.org/stable/c/f4858832ddef2f39f21e30b7226bbcd3c4b2bc96
• git.kernel.orghttps://git.kernel.org/stable/c/2f55b58b5a0bbed192d60c444a45a49cdf1b545f
• git.kernel.orghttps://git.kernel.org/stable/c/7962b522222628596ca9ecc8722efc95367aadbd
• git.kernel.orghttps://git.kernel.org/stable/c/4dee4c0688443aaf5bbec74aa203c851d1d53c35
• git.kernel.orghttps://git.kernel.org/stable/c/1f2dc36c297d27733f1b380ea644cf15a361bd7b
• git.kernel.orghttps://git.kernel.org/stable/c/82d8701b2c930d0e96b0dbc9115a218d791cb0d2