CVE-2026-31398

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

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 2.3% of scored records. A rank, not a probability.

NVD base score

7.8 (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: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

2026-04-03 15:16Z5 MO AGO

Last updated

2026-08-05 12:22Z1 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-617Reachable AssertionBase
• CWE-281Improper Preservation of PermissionsBase

Data version

5.2

Document digest

a7c1d8bb0309d293ca1bd409a93cecce45bd4d4932f3422effacac10a7adaa65

• git.kernel.orghttps://git.kernel.org/stable/c/99888a4f340ca8e839a0524556bd4db76d63f4e0
• git.kernel.orghttps://git.kernel.org/stable/c/a0911ccdba41b0871abbf8412857bafedec3dbe1
• git.kernel.orghttps://git.kernel.org/stable/c/29f40594a28114b9a9bc87f6cf7bbee9609628f2