CVE-2026-64191

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 2.8% 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

2026-07-20 16:27Z1 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-125Out-of-bounds ReadBase
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

00b2547ca57d3b195f552251d52d1063426baf08fcc00311f099518e6fd8baa2

• git.kernel.orghttps://git.kernel.org/stable/c/7e9072dbd5f2f17934751873450d2c22080ead80
• git.kernel.orghttps://git.kernel.org/stable/c/21e87f336ac6303fed54a69b1d0d79a23b25c8d0
• git.kernel.orghttps://git.kernel.org/stable/c/3fd225f3e4cd67ec8ddab1afed9da03c7c43537c
• git.kernel.orghttps://git.kernel.org/stable/c/1c4ffe6b4f04365485ed58d64c9bb86b46fc9037
• git.kernel.orghttps://git.kernel.org/stable/c/4bd8635f28c135a08aac6badcd7d9b5cdb34335f
• git.kernel.orghttps://git.kernel.org/stable/c/5f4d2bd028ebb6e4c09a9d64842546022321d4a7
• git.kernel.orghttps://git.kernel.org/stable/c/0526931b16e5a118d367b7bfce7d797e63f7ac69
• git.kernel.orghttps://git.kernel.org/stable/c/6036b5067a8199ba7a2dc7b377d4b9dd276d5f9e