CVE-2026-64136

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

0.49% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 40.1% of scored records. A rank, not a probability.

NVD base score

9.8 (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:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-08-13.

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 15:40Z1 MO AGO

Last updated

2026-08-05 12:39Z29 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-414Missing Lock CheckBase

Data version

5.2

Document digest

30026de0046abd07b7fd354dbaaa5f589f963584ad1ba589ab3f0cf899ac8882

• git.kernel.orghttps://git.kernel.org/stable/c/7df1df6f40c0720d30206aa35c0343b962350e0d
• git.kernel.orghttps://git.kernel.org/stable/c/13fb413ae22a37c69341918a6d651d19a9b0b9b7
• git.kernel.orghttps://git.kernel.org/stable/c/bf4ebdb19ff9b3cdf992b50715fe61633327416a
• git.kernel.orghttps://git.kernel.org/stable/c/e374f4e496fef8168784f93a4477d67be34485fd
• git.kernel.orghttps://git.kernel.org/stable/c/4d8690dace005a38e6dbde9ecce2da3ad85c7c41