CVE-2024-0646 HIGH

CVE-2024-0646: Kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination

Vendor Red Hat
Product Red Hat Enterprise Linux 8
Weakness CWE-787
Published January 17, 2024
Last update November 6, 2025

CVSS base score

7.0/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

An out-of-bounds memory write flaw was found in the Linux kernel’s Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Key dates

02Disclosure timeline

January 17, 2024 CVE published
November 6, 2025 Record updated