CVE-2026-64523

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

0.36% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 28.9% 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

Received. NVD last modified this record on 2026-08-09.

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 09:20Z1 MO AGO

Last updated

2026-08-09 18:34Z26 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

• CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

eab3d1915c3e54c477fef1ba8e2186f62260f2fabd8bf746962214424ffcbebf

• git.kernel.orghttps://git.kernel.org/stable/c/685b10dd0e32c7782cead16c8cf055c609678583
• git.kernel.orghttps://git.kernel.org/stable/c/b913801ad9b9a51437d84d030ec6843e08976bd6
• git.kernel.orghttps://git.kernel.org/stable/c/16eaba5aa89c04eea125905bb8f988c1897f4f29
• git.kernel.orghttps://git.kernel.org/stable/c/09dba37eee70d0596e26645015f1aa95a9848e9d