CVE-2026-64243

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 2.0% of scored records. A rank, not a probability.

NVD base score

7.1 (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:N/A:H

NVD analysis status

Analyzed. 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

2026-07-24 15:27Z1 MO AGO

Last updated

2026-08-05 12:40Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

• CWE-129Improper Validation of Array IndexVariant
• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

e2a5a8004cfe598afc041f95afd4e971073249d4e348a3835f3ebd224c6a1621

• git.kernel.orghttps://git.kernel.org/stable/c/6fb653b62f169f6050fac45b56bf21ad097e19f6
• git.kernel.orghttps://git.kernel.org/stable/c/d8cc3e747b002a8b965c529de79c0654675b9a1a
• git.kernel.orghttps://git.kernel.org/stable/c/5fe860af8630cf7c78523cbd68e5a234743585aa
• git.kernel.orghttps://git.kernel.org/stable/c/2ff3ac6f7664fe5639cad01712ac5e021fa7939c
• git.kernel.orghttps://git.kernel.org/stable/c/164dcbec9632ca93ae313e6da6e4e05584fa0f02
• git.kernel.orghttps://git.kernel.org/stable/c/05ef77f02607a3dc5d7f9762cb990f76843315d4
• git.kernel.orghttps://git.kernel.org/stable/c/f63ad68e18d774a5d15cd7e405ead63f6b322679