CVE-2026-64551

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

0.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 41.4% of scored records. A rank, not a probability.

NVD base score

9.1 (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:N/A:H

NVD analysis status

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

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

2026-07-27 20:10Z1 MO AGO

Last updated

2026-08-17 04:57Z19 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

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

Weaknesses

No CWE assigned

Data version

5.2

Document digest

b3e85900f165b421aeb4391c075d2d488811ca9c39a6d7c54a7ef60f41f380d0

• git.kernel.orghttps://git.kernel.org/stable/c/6022da37786701df1fc5dd946a6dcba59d5473b1
• git.kernel.orghttps://git.kernel.org/stable/c/861f884f5471632c731cbbd612a1c072e391a624
• git.kernel.orghttps://git.kernel.org/stable/c/588706ebaf8cdb4a4161602949eba365514b1db1
• git.kernel.orghttps://git.kernel.org/stable/c/a257b41ddfe9e327b26581ad2777f04b23ac73f5
• git.kernel.orghttps://git.kernel.org/stable/c/08a8f2d13f703924316e9aeac863a88ef50990c7
• git.kernel.orghttps://git.kernel.org/stable/c/ebe0a55d954fa8da383b6192edb8f763dcb002d5
• git.kernel.orghttps://git.kernel.org/stable/c/bbd6b2ea966cf57b6ae095cf5a8dbc993cd197a0
• git.kernel.orghttps://git.kernel.org/stable/c/1cd23ca80784223fa2204e16203f754da4e821f8