CVE-2026-64401

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

0.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 2.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

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

2026-07-25 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 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

eef7e06988545ee9702dd33fea861f453d8ed6d314a462c940ba197d9721108a

• git.kernel.orghttps://git.kernel.org/stable/c/51d18db392e5386a7bb9e816d611f14e600cca3c
• git.kernel.orghttps://git.kernel.org/stable/c/aa3c0cab4b28c5007ec570c63e1d6ad6943ed0fd
• git.kernel.orghttps://git.kernel.org/stable/c/945b4a4a54497db1dcb2f20ef801a84e884dac21
• git.kernel.orghttps://git.kernel.org/stable/c/91b8a58c6ac15c7db6518f696389933282f88da7
• git.kernel.orghttps://git.kernel.org/stable/c/0700f946659d0ab2352ec8a9b1c6fc74b13a27d7
• git.kernel.orghttps://git.kernel.org/stable/c/ec457f9afe5ae9538bdcd58fd4cb442b9787e183