CVE-2026-63831

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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 16.3% 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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-08-17.

Red Hat severity

Important. 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

2026-07-19 12:02Z1 MO AGO

Last updated

2026-08-17 04:51Z19 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

No CWE assigned

Data version

5.2

Document digest

114c42efd6a99d92f5a674ac585d19f67bd75778b6753127a258f214958ac2b0

• git.kernel.orghttps://git.kernel.org/stable/c/3a2b378b3a9ca75d3518d879148d2ad25b5714a9
• git.kernel.orghttps://git.kernel.org/stable/c/7a831bcd0486788283ef35e396d4282ee01bb0d5
• git.kernel.orghttps://git.kernel.org/stable/c/ff976ef7c39199ebff33c18034636595016db9f0
• git.kernel.orghttps://git.kernel.org/stable/c/e28e7fd34c449028325322a3f5127b92594b7396
• git.kernel.orghttps://git.kernel.org/stable/c/993fd674fe85d114e6a8d3963033d4fbbc2170a8
• git.kernel.orghttps://git.kernel.org/stable/c/bd968bdd568beacfdf98ec537a87527e85f1d0cf
• git.kernel.orghttps://git.kernel.org/stable/c/86d531337ea1ba02d9f2bc830d07c683d9bfaade
• git.kernel.orghttps://git.kernel.org/stable/c/84a04eb5b210643bd67aab81ff805d32f62aa865