NULL pointer dereference in Linux kernel - CVE-2023-52568

Vulnerability identifier: #VU90637

CSH Severity: Low

CVSS v4 BT: 4.3 [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

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.

Linux kernel
openEuler
kernel
python3-perf
kernel-tools
kernel-source
kernel-headers
kernel-tools-debuginfo
kernel-debugsource
python3-perf-debuginfo
kernel-devel
perf-debuginfo
kernel-debuginfo
perf
kernel-tools-devel

Install update from vendor's website.

Linux kernel - addressed in versions 6.1.56, 6.5.6, 6.6
kernel - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
python3-perf - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
kernel-tools - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
kernel-source - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
kernel-headers - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
kernel-tools-debuginfo - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
kernel-debugsource - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
python3-perf-debuginfo - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
kernel-devel - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
perf-debuginfo - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
kernel-debuginfo - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
perf - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109
kernel-tools-devel - addressed in versions 5.10.0-136.72.0.152, 5.10.0-153.51.0.129, 5.10.0-196.0.0.109

• 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

• NULL pointer dereference in Linux kernel cpu sgx
• openEuler 22.03 LTS SP3 update for kernel
• openEuler 22.03 LTS SP1 update for kernel
• openEuler 22.03 LTS SP2 update for kernel