CVE-2026-63976

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

0.46% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 37.8% 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 2026-07-30.

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 14:56Z1 MO AGO

Last updated

2026-08-05 12:37Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-1341Multiple Releases of Same Resource or HandleBase

Data version

5.2

Document digest

4c9eb4f6c3fc9971694dd9ba232909a7ebf543ee6dfbf12d75e75543cede4237

• git.kernel.orghttps://git.kernel.org/stable/c/59f5ecf6ad5c4db6ae81965a96156954a3b0d89a
• git.kernel.orghttps://git.kernel.org/stable/c/ae0152d77d101c920769934fb102b18de0c6f526
• git.kernel.orghttps://git.kernel.org/stable/c/c2afd2613fda90107c5e2fe8e855627451749c78
• git.kernel.orghttps://git.kernel.org/stable/c/cc2b4f749de09975bfa06e58bbbad2f6acd4c79c
• git.kernel.orghttps://git.kernel.org/stable/c/3b5b5f423b4fd23404a393bda8adba3cd6f74ef1
• git.kernel.orghttps://git.kernel.org/stable/c/f39049304ba655ffcbb92edbdf8c51a1f1210bed
• git.kernel.orghttps://git.kernel.org/stable/c/8e7977afaef37c6bd2b2654f1bce6ab40d471147
• git.kernel.orghttps://git.kernel.org/stable/c/00e1950716c6ed67d74777b2db286b0fa23b4be9