NULL pointer dereference in Linux kernel - CVE-2023-46862
Published: December 6, 2023
Vulnerability identifier: #VU83903
CSH Severity: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2023-46862
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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 io_uring_show_fdinfo() function in io_uring/fdinfo.c. A local user can trigger a race with SQ thread exit and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.