CVE-2026-64099

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 3.2% 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 2026-08-11.

Red Hat severity

Important. 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 15:40Z1 MO AGO

Last updated

2026-08-05 12:39Z1 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-416Use After FreeVariant
• CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

39965a9230371b90c19075a9a7ea28c7de3c7c9e024014d6edf1f78ed980bda8

• git.kernel.orghttps://git.kernel.org/stable/c/acd55ea40d03e06f20a9986363019e0e5173990e
• git.kernel.orghttps://git.kernel.org/stable/c/0f8efc45740b0628a787d1b0be8a0ddabd700625
• git.kernel.orghttps://git.kernel.org/stable/c/69c2a1fec2e7ca25598180816f3bc56e1842eb41
• git.kernel.orghttps://git.kernel.org/stable/c/b0fe80c0b9250b35e2211bf3117e7aca814a21b0