CVE-2026-64437

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

0.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 36.1% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-09-03.

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 08:51Z1 MO AGO

Last updated

2026-08-17 04:55Z18 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

4609a59df67a057cc495bb2947540b0a9a547565147a842613ebbb737f16ba23

• git.kernel.orghttps://git.kernel.org/stable/c/a796ba4e61d5e14e07b79a359faac69f8f9b22a3
• git.kernel.orghttps://git.kernel.org/stable/c/b8e274e69ab09222c7a552c7c0c1eef9ce627fc1
• git.kernel.orghttps://git.kernel.org/stable/c/ddb9239828336b36d8a3ef5943fdffb2f55b6508
• git.kernel.orghttps://git.kernel.org/stable/c/94083db751930b1540ddff2b54d4677549c57f81
• git.kernel.orghttps://git.kernel.org/stable/c/12c36c99655f325befe50c26842f7deca414c381
• git.kernel.orghttps://git.kernel.org/stable/c/10f293a07f9e10e988b0ae44e2e99c631f5a68e0