CVE-2026-63867

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

0.59% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 45.7% of scored records. A rank, not a probability.

NVD base score

8.2 (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:N/I:L/A:H

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-07-27.

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 14:18Z1 MO AGO

Last updated

2026-08-05 12:36Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

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

Weaknesses

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

Data version

5.2

Document digest

94ca8c1fca826cb8a2f13c6f8f42dea8507207af896b7c74b001952bbfa7f358

• git.kernel.orghttps://git.kernel.org/stable/c/301a33fd590c408a05c5df800e0cc1e6a8a2f8f8
• git.kernel.orghttps://git.kernel.org/stable/c/68364963e5baf03f16b4420292291f75c8f66497
• git.kernel.orghttps://git.kernel.org/stable/c/907ac6b1658e0277f979fcdfae2a753b495c1510
• git.kernel.orghttps://git.kernel.org/stable/c/c4f4cf60797974873dbc8e100144682a6f2f861f
• git.kernel.orghttps://git.kernel.org/stable/c/3b8cbba7c0ed31189c89f90be247b8973ffa79ef
• git.kernel.orghttps://git.kernel.org/stable/c/8f4f0a157e8436a05bf8c3670b24dbc258911c43
• git.kernel.orghttps://git.kernel.org/stable/c/8ab24fdebc369c0dfb90f82c1650b1e66662bb45