CVE-2026-64063

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 2026-09-02.

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

2026-07-19 15:39Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

608c24fe965ceb95dc3aeb9d54e039408469aa2bc8b7fddd9d1b6c76d9af6322

• git.kernel.orghttps://git.kernel.org/stable/c/20195925c768626dc901a4781a51e508702c88ad
• git.kernel.orghttps://git.kernel.org/stable/c/ef9b521212e4863814ef7dfe19889abaf55ca840
• git.kernel.orghttps://git.kernel.org/stable/c/cdae00e8e215d95911d95f100599e187b6560de5
• git.kernel.orghttps://git.kernel.org/stable/c/7b4dcf1b9455a6e52ac7478b4057dbe10359576d