CVE-2026-64027

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 2.7% 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

Awaiting Analysis. NVD last modified this record on 2026-07-30.

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

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-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase

Data version

5.2

Document digest

3856bc40b23bb9b987cb49ac56d4f48d7ad5e1de907a026973d0725dc800ab4b

• git.kernel.orghttps://git.kernel.org/stable/c/2417df5e7bb4184b9d3a2988036bf2c46e594545
• git.kernel.orghttps://git.kernel.org/stable/c/96ea960dd40fd55302e0fd755176f26a95e6a50c
• git.kernel.orghttps://git.kernel.org/stable/c/b8d7519352ba8c6df83259295d4a3bad093cae90