NULL pointer dereference in Linux kernel - CVE-2022-50538

Vulnerability identifier: #VU116787

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-2022-50538

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 fake_init() function in drivers/vme/bridges/vme_fake.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
openEuler
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf
python3-perf-debuginfo

Install update from vendor's repository.

Linux kernel - update to 5.4.229
kernel - update to 4.19.90-2510.2.0.0347
bpftool - update to 4.19.90-2510.2.0.0347
bpftool-debuginfo - update to 4.19.90-2510.2.0.0347
kernel-debuginfo - update to 4.19.90-2510.2.0.0347
kernel-debugsource - update to 4.19.90-2510.2.0.0347
kernel-devel - update to 4.19.90-2510.2.0.0347
kernel-source - update to 4.19.90-2510.2.0.0347
kernel-tools - update to 4.19.90-2510.2.0.0347
kernel-tools-debuginfo - update to 4.19.90-2510.2.0.0347
kernel-tools-devel - update to 4.19.90-2510.2.0.0347
perf - update to 4.19.90-2510.2.0.0347
perf-debuginfo - update to 4.19.90-2510.2.0.0347
python2-perf - update to 4.19.90-2510.2.0.0347
python2-perf-debuginfo - update to 4.19.90-2510.2.0.0347
python3-perf - update to 4.19.90-2510.2.0.0347
python3-perf-debuginfo - update to 4.19.90-2510.2.0.0347

• https://git.kernel.org/stable/c/09be0e7ac5f9374b6f8de72c89ed67129af71f65
• https://git.kernel.org/stable/c/37d3de40c1ffb6a5e626bf46ff5ef5766c824e2c
• https://git.kernel.org/stable/c/4bc217b25ea81034fad8e33fd33e4659f086421d
• https://git.kernel.org/stable/c/60ff9bd4ffc87bace581e235a6728f5ac8e5071f
• https://git.kernel.org/stable/c/69b43937f14bdc3594f57f1a507a14f3d1187136
• https://git.kernel.org/stable/c/7bef797d707f1744f71156b21d41e3b8c946631f
• https://git.kernel.org/stable/c/a2a93546d414c7fe4862b87183fb737d1300d9d2
• https://git.kernel.org/stable/c/e831fdd60e5863ee03173baf5a0f7c5450b44381
• https://git.kernel.org/stable/c/f3f65c4177846c483bf009f8c512ab04b3c62466
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229

• NULL pointer dereference in Linux kernel vme bridges driver
• openEuler 20.03 LTS SP4 update for kernel