#VU120554 Buffer overflow in Linux kernel - CVE-2022-50756
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120554
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2022-50756
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the nvme_dbbuf_update_and_check_event() function in drivers/nvme/host/pci.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/9141144b37f30e3e7fa024bcfa0a13011e546ba9
- https://git.kernel.org/stable/c/b1814724e0d7162bdf4799f2d565381bc2251c63
- https://git.kernel.org/stable/c/c89a529e823d51dd23c7ec0c047c7a454a428541
- https://git.kernel.org/stable/c/dfb6d54893d544151e7f480bc44cfe7823f5ad23
- https://git.kernel.org/stable/c/e1777b4286e526c58b4ee699344b0ad85aaf83a0
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.17