CVE-2026-64034

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

0.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 4.6% of scored records. A rank, not a probability.

NVD base score

9.3 (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:C/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 15:39Z1 MO AGO

Last updated

2026-08-05 12:38Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

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

Weaknesses

• CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase

Data version

5.2

Document digest

046e3c71b279090d5a3fabcb9b24b515b669987fee5f8fe28cbd484dcb885e74

• git.kernel.orghttps://git.kernel.org/stable/c/a201c66edf2ebc6cfdc3813a889ba20fecebfae3
• git.kernel.orghttps://git.kernel.org/stable/c/70ad2dff8d052a85dfef15715b531f38a29108cf
• git.kernel.orghttps://git.kernel.org/stable/c/566f42fb67a7ebfed6650e407e5b72e6b3e83bf7
• git.kernel.orghttps://git.kernel.org/stable/c/6180a06bbc99fd9114b8db4be6c4d46e40f046ef
• git.kernel.orghttps://git.kernel.org/stable/c/09ec063d87c2dd3fa6f3561361a017bd882e9f37
• git.kernel.orghttps://git.kernel.org/stable/c/3c4db56ccd13dd020fbf43afabaee74a40ec75e4
• git.kernel.orghttps://git.kernel.org/stable/c/35f0f0a2536a4d604b4dbad92c85c4a8fdebb870