CVE-2026-64047

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 41.6% 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

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

2026-07-19 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-193Off-by-one ErrorBase

Data version

5.2

Document digest

8dd97a63ce4d846d1616994059f848c15647be906a5fa3f23bd9c5effc93671b

• git.kernel.orghttps://git.kernel.org/stable/c/73963a375885d5ccb7def39fd0b4f542e0f343dd
• git.kernel.orghttps://git.kernel.org/stable/c/47110c3a9ac247b688657337f5981efcfcb240dc
• git.kernel.orghttps://git.kernel.org/stable/c/84158c2997159df4a0d70cd9c46774512d32a522
• git.kernel.orghttps://git.kernel.org/stable/c/131ef12057d92b77b636321b7849c69222405a97
• git.kernel.orghttps://git.kernel.org/stable/c/66339b71f105e6f83e0da3b9583d95077534fe1d
• git.kernel.orghttps://git.kernel.org/stable/c/eca989eab4b2599dcb02f72140a7c08f08838520
• git.kernel.orghttps://git.kernel.org/stable/c/2fb0dc7e0099686c4e9d2732745d8a31b18c3628
• git.kernel.orghttps://git.kernel.org/stable/c/285943c6e7ca309bbea84b253745154241d9788a