CVE-2026-64397

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

0.48% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 39.1% 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 2026-08-17.

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

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

No CWE assigned

Data version

5.2

Document digest

9c4dc079168d18215fa3228bc92cc3f5d62f2900d502e3e54dc02a44cb482c40

• git.kernel.orghttps://git.kernel.org/stable/c/1426fd79102539bc0ab5c8fced047ad4313b9908
• git.kernel.orghttps://git.kernel.org/stable/c/2a64dbf9c739ddf7a25a066507597bf89f8f73d2
• git.kernel.orghttps://git.kernel.org/stable/c/64dac2d486ec1eb18dc00968b16a230b6b75ec24
• git.kernel.orghttps://git.kernel.org/stable/c/a1d5d31cad593ea5e1b637f2f39c9ef6d09d1199
• git.kernel.orghttps://git.kernel.org/stable/c/fd22b039a5a05bc1d6818e9dcd1001fb432a829d
• git.kernel.orghttps://git.kernel.org/stable/c/be6d26bf27499977c746abc163659915082348d8