Use-after-free in Linux kernel - CVE-2022-50737

Vulnerability identifier: #VU120399

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-50737

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the ntfs_security_init() function in fs/ntfs3/fsntfs.c. A local user can escalate privileges on the system.

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

Install update from vendor's repository.

Linux kernel - update to 5.15.87
kernel - update to 5.10.0-299.0.0.202
bpftool - update to 5.10.0-299.0.0.202
bpftool-debuginfo - update to 5.10.0-299.0.0.202
kernel-debuginfo - update to 5.10.0-299.0.0.202
kernel-debugsource - update to 5.10.0-299.0.0.202
kernel-devel - update to 5.10.0-299.0.0.202
kernel-headers - update to 5.10.0-299.0.0.202
kernel-source - update to 5.10.0-299.0.0.202
kernel-tools - update to 5.10.0-299.0.0.202
kernel-tools-debuginfo - update to 5.10.0-299.0.0.202
kernel-tools-devel - update to 5.10.0-299.0.0.202
perf - update to 5.10.0-299.0.0.202
perf-debuginfo - update to 5.10.0-299.0.0.202
python3-perf - update to 5.10.0-299.0.0.202
python3-perf-debuginfo - update to 5.10.0-299.0.0.202

• https://git.kernel.org/stable/c/24ee53c6bce15500db22f2a7aee9dd830e806c90
• https://git.kernel.org/stable/c/bfcdbae0523bd95eb75a739ffb6221a37109881e
• https://git.kernel.org/stable/c/d6379ce242960a8e9ecd6ff76f476d9336c21f16
• https://git.kernel.org/stable/c/d7ce7bb6881aae186e50f57eea935cff8d504751
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.87

• Use-after-free in Linux kernel ntfs3
• openEuler 22.03 LTS SP4 update for kernel