CVE-2026-64073

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 3.1% 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 2026-09-03.

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

2026-07-19 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 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-364Signal Handler Race ConditionBase
• CWE-416Use After FreeVariant

Data version

5.2

Document digest

be8d1b06f53dd241ffd221f40aed94f5e558fa7241c1eae44e9fcd48241d5e3e

• git.kernel.orghttps://git.kernel.org/stable/c/2dc79362302922cb18f35e262712b5e58de65442
• git.kernel.orghttps://git.kernel.org/stable/c/eef4f71b46a9929ac33e968538c9dd5d96a02460
• git.kernel.orghttps://git.kernel.org/stable/c/684a78183c54c23e70d1cba320f7fc184604210b
• git.kernel.orghttps://git.kernel.org/stable/c/18c0456ea2615b1a743a6db739c74411c3b42bc6
• git.kernel.orghttps://git.kernel.org/stable/c/81b582784518196eff1050212a046bc29d3a05dd
• git.kernel.orghttps://git.kernel.org/stable/c/91840be8f710370607f949a627e070896faeddb8