CVE-2026-31558

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 2.9% of scored records. A rank, not a probability.

NVD base score

8.8 (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:C/C:H/I:H/A:H

NVD analysis status

Analyzed. 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 14:35Z4 MO AGO

Last updated

2026-08-05 12:23Z1 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-839Numeric Range Comparison Without Minimum CheckBase

Data version

5.2

Document digest

4843dbe2f8e956475996dbab35beb938abf9befcefa7173e08ca5f6f4c6d7a86

• git.kernel.orghttps://git.kernel.org/stable/c/596c3f8069c4792f22fce8c4452f44410032d910
• git.kernel.orghttps://git.kernel.org/stable/c/878cf6acb4fd8ab4126cf9d369a5bb0e23123418
• git.kernel.orghttps://git.kernel.org/stable/c/47857b05bd50db01e211a1b6f513d57901cd3e6b
• git.kernel.orghttps://git.kernel.org/stable/c/2db06c15d8c7a0ccb6108524e16cd9163753f354