CVE-2026-64268

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

0.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 50.9% of scored records. A rank, not a probability.

NVD base score

9.8 (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:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-08-17.

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

2026-07-25 08:49Z1 MO AGO

Last updated

2026-08-17 04:52Z18 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

cd8f72d1eb67299fff8d061c1c4ca63734a573484e8b152f453d16a688fafdc3

• git.kernel.orghttps://git.kernel.org/stable/c/a31b6d18ded3cc32d9ee85a6ff0726d4274887b2
• git.kernel.orghttps://git.kernel.org/stable/c/595e6537ad1a210da32cbb9a7f91aa73090915ba
• git.kernel.orghttps://git.kernel.org/stable/c/3ef7e052cbd05a8b13a51a07b185a39ec93ee1cf
• git.kernel.orghttps://git.kernel.org/stable/c/b2e26c955f8dd7e8d3f16c858db05245ea4fa817
• git.kernel.orghttps://git.kernel.org/stable/c/6bc89f34a4597f9f6d41f7a60c67a3153bfe8851
• git.kernel.orghttps://git.kernel.org/stable/c/423a78ff7928c2601013f73ec6d896f5597d0df5
• git.kernel.orghttps://git.kernel.org/stable/c/75c93cd3c421890f49ea93f0b978b9b7bb10e5e3
• git.kernel.orghttps://git.kernel.org/stable/c/7d29f7e9dbd844cae4d3e559cf78324b9642fd6b