#VU120799 NULL pointer dereference in Linux kernel - CVE-2022-50819
Published: December 30, 2025 / Updated: December 30, 2025
Vulnerability identifier: #VU120799
Vulnerability risk: Low
CVSSv4.0: 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-2022-50819
CWE-ID: CWE-476
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 perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the begin_cpu_udmabuf() function in drivers/dma-buf/udmabuf.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/9861e43f097a50678041f973347b3a88f2da09cf
- https://git.kernel.org/stable/c/bbe2f6f90310b3a0b5de4e0dc022b36faabfd718
- https://git.kernel.org/stable/c/d9c04a1b7a15b5e74b2977461d9511e497f05d8f
- https://git.kernel.org/stable/c/dfbed8c92eb853929f4fa676ba493391dab47be4
- https://git.kernel.org/stable/c/fc285549f454c0f50f87ec945fc0bf44719c0fa4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17