CVE-2026-64320

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

0.75% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 52.1% of scored records. A rank, not a probability.

NVD base score

9.1 (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:N/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

2026-07-25 08:49Z1 MO AGO

Last updated

2026-08-17 04:53Z18 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

8bbd4249d8835e07fe71c4127b58e86bfb91c3396d6f257e186eba834852b257

• git.kernel.orghttps://git.kernel.org/stable/c/33b974eb626154ae9348f2bac7de84cb2a3d9dd4
• git.kernel.orghttps://git.kernel.org/stable/c/56c021a0869260d04c4b65d1471936aaf9177114
• git.kernel.orghttps://git.kernel.org/stable/c/a29b316b9bbfd269f323ab4ba9906a894025680f
• git.kernel.orghttps://git.kernel.org/stable/c/53cd102a7a56079b11b897835bd9b94c14e6322c