CVE-2026-64045

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

0.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 4.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-09-02.

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

2026-07-19 15:39Z1 MO AGO

Last updated

2026-08-05 12:38Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.4)

CNA CVSS vector

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

Weaknesses

• CWE-364Signal Handler Race ConditionBase
• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

547542fe69f50b94f620b834634b34b78834bee5790c9e7ae8a19aa43689cd1d

• git.kernel.orghttps://git.kernel.org/stable/c/e5460eb7238c19d651a9b22b2378b587033a4095
• git.kernel.orghttps://git.kernel.org/stable/c/d3ef441907fca7c340979e577a3db3bb634bf166
• git.kernel.orghttps://git.kernel.org/stable/c/775d8d7ad02aa345e1588424a6a8b9ae49fb9012