SB2025122659 - Memory leak in Linux kernel x86 xen
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB2025122659
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2022-50761)
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.
Remediation
Install update from vendor's website.
References
- 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