CVE-2026-63926

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 8.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/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 8.4)

CNA CVSS vector

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

Weaknesses

• CWE-823Use of Out-of-range Pointer OffsetBase

Data version

5.2

Document digest

70b6a4022f72a1189675b19d1d514603446e3041516b4f638c523a23aea41e74

• git.kernel.orghttps://git.kernel.org/stable/c/f14609d8146707452e0822f3c8154674ce677251
• git.kernel.orghttps://git.kernel.org/stable/c/d81b323af2dcee47573907ccb89c0df9b45cb2e2
• git.kernel.orghttps://git.kernel.org/stable/c/aeb95146848d12206e1b2cfacd4f40e21ce81d94
• git.kernel.orghttps://git.kernel.org/stable/c/96b72672ce849a1402730238e64d9b20bf06a96d
• git.kernel.orghttps://git.kernel.org/stable/c/3075c21d2d76c0067f4a382765b43d6cc10470f1
• git.kernel.orghttps://git.kernel.org/stable/c/5e19028667963fb371ebb00cecc2a473ef92056b
• git.kernel.orghttps://git.kernel.org/stable/c/63f64a510c7917658ddf4d073ece73914ee25346
• git.kernel.orghttps://git.kernel.org/stable/c/f72eed9b84fb771019a955908132410a9ba9ea3f