#VU63567 Out-of-bounds read in Linux kernel - CVE-2021-45402 

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Main Vulnerability Database Vulnerabilities #VU63567

#VU63567 Out-of-bounds read in Linux kernel - CVE-2021-45402

Published: May 24, 2022 / Updated: May 24, 2022


Vulnerability identifier: #VU63567
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-45402
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to check_alu_op() function in kernel/bpf/verifier.c does not properly update bounds while handling the mov32 instruction. A local user can obtain potentially sensitive address information.


Remediation

Install updates from vendor's website.

External links