CVE-2026-63884

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

0.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 7.3% 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 2026-07-27.

Red Hat severity

Important. 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 14:54Z1 MO AGO

Last updated

2026-08-05 12:36Z1 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-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

503f06b1a2b8dce78c675c8457299afb19a701a7fd2276b2284a18bca1c9f2f2

• git.kernel.orghttps://git.kernel.org/stable/c/df73f3bc731af1c39ac5405bc59c4e7c6f8e9117
• git.kernel.orghttps://git.kernel.org/stable/c/28b22dbaf407598cb3bb1d2c586a6f8018690ac2
• git.kernel.orghttps://git.kernel.org/stable/c/073bcbc95e9648c976da1654c7590a8d6ee12c2d
• git.kernel.orghttps://git.kernel.org/stable/c/c9ae7e7e3bc98615364313b08d7acea5239ded0b
• git.kernel.orghttps://git.kernel.org/stable/c/a29654d451bbffe63d584a4cf64ad0efce6bcf1c
• git.kernel.orghttps://git.kernel.org/stable/c/5c4063c87a619e4df954c179d24628636f5db15f