CVE-2026-64556

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

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 2.4% 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

Received. NVD last modified this record on 2026-08-17.

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

2026-07-29 08:01Z1 MO AGO

Last updated

2026-08-17 04:57Z18 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

No CWE assigned

Data version

5.2

Document digest

44ff6959e5746cc82de696408580f0ec3a0ac35bb7ae6261e57cde608f01da0b

• git.kernel.orghttps://git.kernel.org/stable/c/4cdb1b3ab96eb1b7eb70bc5c82fede334bd60df2
• git.kernel.orghttps://git.kernel.org/stable/c/39358e856fb89e62e3c8d7389a2dc4ec33dbe90e
• git.kernel.orghttps://git.kernel.org/stable/c/a2d5d3ee7b6e3953114726b1521e62123ab5b043
• git.kernel.orghttps://git.kernel.org/stable/c/06ccef0434e98058ddae7bcebc901f93d22b7653
• git.kernel.orghttps://git.kernel.org/stable/c/037a3c43edfb597665dd34457cd22b14692f2ba3