CVE-2026-64406

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

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 19.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:A/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 8.0)

CNA CVSS vector

CVSS:3.1/AV:A/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

32f06e9b2e05035e3201cfdf4c2542a78f63d523d290398e4869bbd9def9de51

• git.kernel.orghttps://git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bfab6f4e8d
• git.kernel.orghttps://git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f0728ca9547
• git.kernel.orghttps://git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0
• git.kernel.orghttps://git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6177d9ca6
• git.kernel.orghttps://git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506e010d1db
• git.kernel.orghttps://git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a101c056614
• git.kernel.orghttps://git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd377ba1049
• git.kernel.orghttps://git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0afc3ab9a