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LIN1021-5669 : Security Advisory - linux - CVE-2023-0459

Created: Apr 19, 2023    Updated: May 26, 2023
Resolved Date: Apr 19, 2023
Found In Version: 10.21.20.1
Fix Version: 10.21.20.16
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Kernel

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

https://nvd.nist.gov/vuln/detail/CVE-2023-0459

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