CVE-2026-64402

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 2.9% 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 04:55Z18 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-787Out-of-bounds WriteBase

Data version

5.2

Document digest

4969a5f9e39b235be72d59a68ca8bb0fcf3343208b164739eeedc27bf17beef8

• git.kernel.orghttps://git.kernel.org/stable/c/38dbc8db8341ccdf8e1e1a067453d33ad751864b
• git.kernel.orghttps://git.kernel.org/stable/c/4c5a0a946373da99a80398289b28845b5ae40cd1
• git.kernel.orghttps://git.kernel.org/stable/c/661a019ac0413ecec9e5d1dfcc12fbca8e78d5fb
• git.kernel.orghttps://git.kernel.org/stable/c/daf6246ab988fc8bdc82ad7c8d0b1c182d11b15f
• git.kernel.orghttps://git.kernel.org/stable/c/98495b5a4d77dd22e106f462b76e1093a55b29a7