CVE-2026-63830

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

0.37% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 29.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

Critical (CVSS 9.4)

CNA CVSS vector

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

Weaknesses

No CWE assigned

Data version

5.2

Document digest

66ed0083de7ce4dc9bb124b70ffae846b000a67a665ee9634b9b152809c493b4

• git.kernel.orghttps://git.kernel.org/stable/c/f126eed589eec6f201405abbc398844042ef6d57
• git.kernel.orghttps://git.kernel.org/stable/c/31a110642b5fb5e61940cbcfb503445ac4f28017
• git.kernel.orghttps://git.kernel.org/stable/c/9bb86d8184b37503816150c4a6ad3c17dfdbe827
• git.kernel.orghttps://git.kernel.org/stable/c/0eb4c16c4adb262763bda870a8ed38a1a9dec7ec
• git.kernel.orghttps://git.kernel.org/stable/c/d22cc92bc41290e5783a72375e0843d9435f6001
• git.kernel.orghttps://git.kernel.org/stable/c/1acdd14c0990dd1cd4b6534f00366d2e6dfce05f
• git.kernel.orghttps://git.kernel.org/stable/c/21ed9540a8e1906dfcbc1bb82ba9b4de4fa4bd6d
• git.kernel.orghttps://git.kernel.org/stable/c/406e8a651a7b854c41fecd5117bb282b3a6c2c6b