CVE-2026-64000

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

0.49% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 40.1% 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

Awaiting Analysis. NVD last modified this record on 2026-07-30.

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 14:56Z1 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-805Buffer Access with Incorrect Length ValueBase

Data version

5.2

Document digest

7c37d249d971dc248bea7593453e2fc1245491e53a0c174cc1b345b8d8e92a10

• git.kernel.orghttps://git.kernel.org/stable/c/09a37dca090c55ffb1a33f52d8667f1c2367ef48
• git.kernel.orghttps://git.kernel.org/stable/c/a4b64f3e9c7b8259f7dd251a0313420ba7c01852
• git.kernel.orghttps://git.kernel.org/stable/c/71c986c0ba45b7dc574fae27c83e7b6671556f37
• git.kernel.orghttps://git.kernel.org/stable/c/fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7
• git.kernel.orghttps://git.kernel.org/stable/c/78607a6854a22a2502f68092202e75a39af4865d
• git.kernel.orghttps://git.kernel.org/stable/c/f229426072fc865654a60978bb7fda790a051ff3