CVE-2026-64398

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

0.46% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 38.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-09-04.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2026-07-25 08:50Z1 MO AGO

Last updated

2026-08-17 04:54Z18 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

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

Weaknesses

No CWE assigned

Data version

5.2

Document digest

02f38ff44e8f96ce6c2d1b593283ec69fe0ea9c35db0c77bf5095fbf6553b6a5

• git.kernel.orghttps://git.kernel.org/stable/c/25377f369688dd0bd814dc8965ed26d44238ecaa
• git.kernel.orghttps://git.kernel.org/stable/c/3072d82461f498c85daea8766e9d8bfbada31605
• git.kernel.orghttps://git.kernel.org/stable/c/ca53bb17f4e8232cfaece3953d3cef62c559b039
• git.kernel.orghttps://git.kernel.org/stable/c/57f2042fd87d7ce8fc3ac8b6c176e554df68b1a7
• git.kernel.orghttps://git.kernel.org/stable/c/deffa929086d7902e30918adf3dd27ccfe9c08b1
• git.kernel.orghttps://git.kernel.org/stable/c/3320ba068198adc144c89d6661b805acce01735b