CVE-2026-64066

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

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 36.8% 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 2026-09-03.

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 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-1050Excessive Platform Resource Consumption within a LoopBase
• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

490ba84a8c6adfed5cdfa1b2c0e046bf8218ce78e5f9805323fdc890d7f9ad7b

• git.kernel.orghttps://git.kernel.org/stable/c/884c4c4f35e577aba6a0593c80cbea9ca5e6e2b8
• git.kernel.orghttps://git.kernel.org/stable/c/0256e79ce42101ad036edd4205bccca621ea0927
• git.kernel.orghttps://git.kernel.org/stable/c/8a8c0cfdf4658fc5b295b7fc87be56e0d76741f4