#VU77624 Out-of-bounds read in Linux kernel - CVE-2023-34256

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Main Vulnerability Database Vulnerabilities #VU77624

#VU77624 Out-of-bounds read in Linux kernel - CVE-2023-34256

Published: June 22, 2023


Vulnerability identifier: #VU77624
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-34256
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 perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within crc16 in lib/crc16.c when called from fs/ext4/super.c. A local user can trigger an out-of-bounds read error and crash the kernel.


Remediation

Install updates from vendor's website.

External links