CVE-2026-63906

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

0.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 7.1% of scored records. A rank, not a probability.

NVD base score

8.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/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 2026-07-27.

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

2026-07-19 14:55Z1 MO AGO

Last updated

2026-08-05 12:37Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.4)

CNA CVSS vector

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

Weaknesses

• CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

471d45760979a868b76f520493374716b0b7f6fa4ba5e1f1393d0bcd10421437

• git.kernel.orghttps://git.kernel.org/stable/c/632fd888fe33083927e29ef651ac1aba345edd9e
• git.kernel.orghttps://git.kernel.org/stable/c/b987f380620b38c84f054d5ff5c05861a7c2203b
• git.kernel.orghttps://git.kernel.org/stable/c/27e62532228dc42367bb43ebbcd7bf49d8db2b0d
• git.kernel.orghttps://git.kernel.org/stable/c/69f9f2b30af03d9b6e83f78fb0f734b6066d4678
• git.kernel.orghttps://git.kernel.org/stable/c/d53e4c41331f57b9fd78cbf3e480c6ce20aea07b
• git.kernel.orghttps://git.kernel.org/stable/c/e194ce048f5a6c549b3a23a8c568c6470f40f772