Memory leak in Linux kernel - CVE-2022-50837
Published: December 30, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120684
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-2022-50837
CWE-ID: CWE-401
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 memory leak within the dsa_tag_8021q_teardown() and dsa_tag_8021q_register() functions in net/dsa/tag_8021q.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2022-50837
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/09f30f394e832ed09859b6a80fdd20668a9104ff
- https://git.kernel.org/stable/c/14ed46a13aba42a6ddd85de6f6274090df3586a5
- https://git.kernel.org/stable/c/39691d51af99f80efb9e365f94b8e0c791fa1a2f
- https://git.kernel.org/stable/c/e095493091e850d5292ad01d8fbf5cde1d89ac53
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.86
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2