CVE-2026-64540

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

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 19.2% 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:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

NVD analysis status

Received. NVD last modified this record on 2026-08-17.

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

2026-07-27 20:10Z1 MO AGO

Last updated

2026-08-17 04:57Z18 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

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

Weaknesses

No CWE assigned

Data version

5.2

Document digest

c0bd6ea7f6fbd508d73f1898456ca6d62e0239aaacf4aa3806c014df27c75d6e

• git.kernel.orghttps://git.kernel.org/stable/c/255d03551f94c7bdd86c7d9181a70b21917d829f
• git.kernel.orghttps://git.kernel.org/stable/c/4359376e6238d89977a35086e47ca3b07f43e850
• git.kernel.orghttps://git.kernel.org/stable/c/8624e179fa3ce23c2fbd1a198ce30764b73f054a
• git.kernel.orghttps://git.kernel.org/stable/c/573418f7ea8f859a841417eb4b915594094fd967
• git.kernel.orghttps://git.kernel.org/stable/c/0575599e451aff3c5329922562374a2cab25fc51
• git.kernel.orghttps://git.kernel.org/stable/c/0a7d9c7c5f1f208c523abbb4db6aea7bc1fad3db
• git.kernel.orghttps://git.kernel.org/stable/c/3ef79fa3860e644c8de7834fa7300e1c58f38862
• git.kernel.orghttps://git.kernel.org/stable/c/8ff7f2a6da4fccaa5cc9be7251a24e71e29fbd1a