← Database

CVE-2023-0459

MEDIUM CVSS: 6.5 Published: 2023-05-25 Modified: 2026-06-17

Description

Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47

Affected Platforms

Linux Linux Kernel

Weakness Type

CWE-763, CWE-763

References