#VU63578 Out-of-bounds read in Linux kernel - CVE-2021-45469 

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Main Vulnerability Database Vulnerabilities #VU63578

#VU63578 Out-of-bounds read in Linux kernel - CVE-2021-45469

Published: May 24, 2022 / Updated: May 25, 2022


Vulnerability identifier: #VU63578
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-45469
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 execute arbitrary code.

The vulnerability exists due to a boundary condition in the __f2fs_setxattr() function in fs/f2fs/xattr.c in the Linux kernel when an inode has an invalid last xattr entry. A local user can create a specially crafted f2fs image, trigger an out-of-bounds read error, and perform a denial of service attack or possibly execute arbitrary code.


Remediation

Install updates from vendor's website.

External links