CVE-2026-63954

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

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 6.4% 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

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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 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-824Access of Uninitialized PointerBase

Data version

5.2

Document digest

19a21643310dce445d94235c28a43a83d98598695011f3734f160e7b30cbbdd6

• git.kernel.orghttps://git.kernel.org/stable/c/010b08084000ef018f1a8de5197087f3b91d8cfe
• git.kernel.orghttps://git.kernel.org/stable/c/d98d8562b3284b5a5c8eb67e71b794508e46e288
• git.kernel.orghttps://git.kernel.org/stable/c/1648a3c7f4e18f46a4881920133fc4f2494185a0
• git.kernel.orghttps://git.kernel.org/stable/c/7c58c55a2a16f7274772507bd1637be609351b4f
• git.kernel.orghttps://git.kernel.org/stable/c/1d73a533760bc5abb83b3cc759133596f7bb708f
• git.kernel.orghttps://git.kernel.org/stable/c/0886c6f257fe3663f80218aa1919b0f3f21bf22c
• git.kernel.orghttps://git.kernel.org/stable/c/4f37bb30b57d6d403d02673074555bd3c3602bef
• git.kernel.orghttps://git.kernel.org/stable/c/974820a59efde7c1a7e1260bcfe9bb81f833cc9f