Memory leak in Linux kernel - CVE-2022-50761
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120320
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-2022-50761
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 xen_init_lock_cpu() and xen_uninit_lock_cpu() functions in arch/x86/xen/spinlock.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2022-50761
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/07764d00c869a3390bd4f80412cc8b0e669e6c58
- https://git.kernel.org/stable/c/29198f667f4486f9e227e11faf1411fcf4c82a66
- https://git.kernel.org/stable/c/53ff99c76be611acea37d33133c9136969914865
- https://git.kernel.org/stable/c/70966d6b0f59f795b08a70adf5e4478348ecbfbb
- https://git.kernel.org/stable/c/70e7f308d7a8e915c7fbc0f1d959968eab8000cd
- https://git.kernel.org/stable/c/798fc3cf98ca07e448956f39295c5d686ab4b054
- https://git.kernel.org/stable/c/9278bdbb566656b3704704f8dd6cbc24a6fcc569
- https://git.kernel.org/stable/c/b44457b83a034efef58ffa5f3131d4615f1a9837
- https://git.kernel.org/stable/c/ca84ce153d887b1dc8b118029976cc9faf2a9b40
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.303
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.270
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.337
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.163
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.86
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229
- 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