CVE-2026-63832

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 21.6% 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

Analyzed. NVD last modified this record on 2026-10-22.

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 12:02Z3 MO AGO

Last updated

2026-10-21 12:42Z8 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

• CWE-662Improper SynchronizationClass
• CWE-667Improper LockingClass

Data version

5.2

Document digest

cfe50f5cb091c20987498b5c4931a0007a9fd5b663bad0ac6d949b45b837f7b0

• git.kernel.orghttps://git.kernel.org/stable/c/720f39a9c60fdb604291c630f4f157753b376d68
• git.kernel.orghttps://git.kernel.org/stable/c/3c499851753a24d2e148d4e9ca51764c0c51554e
• git.kernel.orghttps://git.kernel.org/stable/c/55e014aaec650ede08b693ba59c8d0443f13f11c
• git.kernel.orghttps://git.kernel.org/stable/c/20b126920a259df4d7dcae19fcfe2c57a74d6b2e