Improper locking in Linux kernel - CVE-2022-50314

Vulnerability identifier: #VU115473

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-2022-50314

CWE-ID: CWE-667

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 improper locking within the nbd_start_device_ioctl() function in drivers/block/nbd.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 4.19.262
kernel - update to 4.19.90-2510.3.0.0348
bpftool - update to 4.19.90-2510.3.0.0348
bpftool-debuginfo - update to 4.19.90-2510.3.0.0348
kernel-debuginfo - update to 4.19.90-2510.3.0.0348
kernel-debugsource - update to 4.19.90-2510.3.0.0348
kernel-devel - update to 4.19.90-2510.3.0.0348
kernel-source - update to 4.19.90-2510.3.0.0348
kernel-tools - update to 4.19.90-2510.3.0.0348
kernel-tools-debuginfo - update to 4.19.90-2510.3.0.0348
kernel-tools-devel - update to 4.19.90-2510.3.0.0348
perf - update to 4.19.90-2510.3.0.0348
perf-debuginfo - update to 4.19.90-2510.3.0.0348
python2-perf - update to 4.19.90-2510.3.0.0348
python2-perf-debuginfo - update to 4.19.90-2510.3.0.0348
python3-perf - update to 4.19.90-2510.3.0.0348
python3-perf-debuginfo - update to 4.19.90-2510.3.0.0348

• https://git.kernel.org/stable/c/1de7c3cf48fc41cd95adb12bd1ea9033a917798a
• https://git.kernel.org/stable/c/3575949513ea3b387b30dac1e69468a923c86caf
• https://git.kernel.org/stable/c/35fb7d4a53d9e36d1b91161ea9870d9c6d57dccf
• https://git.kernel.org/stable/c/3ba3846cb3e2fb3c6fbf79e998472821b298419e
• https://git.kernel.org/stable/c/62006a72b05e0d38727eef5188700f2488be5e89
• https://git.kernel.org/stable/c/b2700f98b3f4dd19fb4315b70581e5caff89eb49
• https://git.kernel.org/stable/c/c0d73be0af8c1310713bc39a8d7a22e35084e14f
• https://git.kernel.org/stable/c/c7b4641bd2395c2f3cd3b0a0cbf292ed9d489398
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.262

• Improper locking in Linux kernel block driver
• openEuler 20.03 LTS SP4 update for kernel