CVE-2026-64056

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

0.55% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 43.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/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

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-820Missing SynchronizationBase

Data version

5.2

Document digest

2daf48f60016eb68e52005978a9fdd5358ee129c36c6ce691a05833c463d0758

• git.kernel.orghttps://git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196b
• git.kernel.orghttps://git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50
• git.kernel.orghttps://git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897
• git.kernel.orghttps://git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4
• git.kernel.orghttps://git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55
• git.kernel.orghttps://git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e
• git.kernel.orghttps://git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0
• git.kernel.orghttps://git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982d