CVE-2026-64423

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 2.7% 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 08:51Z1 MO AGO

Last updated

2026-08-17 04:55Z18 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 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-416Use After FreeVariant

Data version

5.2

Document digest

fbdd4a84177eaf4a703522dc9fbac8904df339b7598738e15ed0e7f545b2500e

• git.kernel.orghttps://git.kernel.org/stable/c/412ba7def06ffe974ba9a1d862b022362c54ffa5
• git.kernel.orghttps://git.kernel.org/stable/c/c6cb5f8ebe1c1a78710c19f102db9fe48b9e6ba9
• git.kernel.orghttps://git.kernel.org/stable/c/5f42729d74bd6c61306d864423290d92962de4e1
• git.kernel.orghttps://git.kernel.org/stable/c/76d030ac95e17f91d69a595f17ebc5979700cf9a
• git.kernel.orghttps://git.kernel.org/stable/c/8820b530cb2388503d7418228d03ba074bf7a03e
• git.kernel.orghttps://git.kernel.org/stable/c/2ca18df1c2611f70eb3eb487e02ae85eb703b284
• git.kernel.orghttps://git.kernel.org/stable/c/f91883031e5a62877a29ce139442973cbea769f1
• git.kernel.orghttps://git.kernel.org/stable/c/7993211bde166471dffac074dc965489f86531f8