NULL pointer dereference in Linux kernel - CVE-2023-52568
Published: June 1, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90637
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-2023-52568
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 NULL pointer dereference within the sgx_encl_eldu(), __sgx_encl_load_page() and sgx_encl_eaug_page() functions in arch/x86/kernel/cpu/sgx/encl.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/811ba2ef0cb6402672e64ba1419d6ef95aa3405d
- https://git.kernel.org/stable/c/1348f7f15d7c7798456856bee74a4235c2da994e
- https://git.kernel.org/stable/c/c6c2adcba50c2622ed25ba5d5e7f05f584711358
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.56
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6