CVE-2026-63947

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

0.34% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 26.2% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/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

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 14:55Z1 MO AGO

Last updated

2026-08-05 12:37Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

b93af59e9324f7c56b597a2077e79e50d73c784d4a2be73063eca58551e0ab65

• git.kernel.orghttps://git.kernel.org/stable/c/1f08a90013e1e632b34321334e861fcefc056505
• git.kernel.orghttps://git.kernel.org/stable/c/cc3832b19f863e3677c5651f001a2e3795f39eb8
• git.kernel.orghttps://git.kernel.org/stable/c/d313683d6ccdd8c01e0562270a2ae25b86d8461d
• git.kernel.orghttps://git.kernel.org/stable/c/d7d6a81b8dd1a8d084a1b755db9406041d53adb5
• git.kernel.orghttps://git.kernel.org/stable/c/6348dfed5b0f9c6074f14322332e97493d32fef0
• git.kernel.orghttps://git.kernel.org/stable/c/b83dcacd2ec7fcc5a48be215f82d573759f87ec2
• git.kernel.orghttps://git.kernel.org/stable/c/2a3ac9ee11dbb9845f3947cef4a79dba658cf6f6