Improper locking in Linux kernel - CVE-2022-50314
Published: September 16, 2025 / Updated: September 22, 2025
Vulnerability identifier: #VU115473
CSH Severity: Low
CVSS v4.0: 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-2022-50314
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2022-50314
Install update from vendor's repository.
Sources
- 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