NULL pointer dereference in Linux kernel - CVE-2023-6679
Published: February 1, 2024
Vulnerability identifier: #VU86018
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-6679
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the dpll_pin_parent_pin_set() function in drivers/dpll/dpll_netlink.c in the Digital Phase Locked Loop (DPLL) subsystem. A local user can pass specially crafted data to the driver and perform a denial of service (DoS) attack.
Affected software
Linux kernel
Fedora
IBM Security Guardium
kernel
kernel-headers
Fedora
IBM Security Guardium
kernel
kernel-headers
How to mitigate CVE-2023-6679
Install updates from vendor's website.
kernel - addressed in versions 6.7.3-100.fc38, 6.7.3-200.fc39
kernel-headers - addressed in versions 6.7.3-100.fc38, 6.7.3-200.fc39
kernel-headers - addressed in versions 6.7.3-100.fc38, 6.7.3-200.fc39