#VU92887 Memory leak in Linux kernel - CVE-2022-48763
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92887
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-2022-48763
CWE-ID: CWE-401
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 memory leak within the kvm_vcpu_ioctl_x86_set_vcpu_events() function in arch/x86/kvm/x86.c, within the nested_vmx_hardware_setup() function in arch/x86/kvm/vmx/nested.c, within the svm_set_efer() function in arch/x86/kvm/svm/svm.c, within the svm_free_nested() and svm_set_nested_state() functions in arch/x86/kvm/svm/nested.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/080dbe7e9b86a0392d8dffc00d9971792afc121f
- https://git.kernel.org/stable/c/e302786233e6bc512986d007c96458ccf5ca21c7
- https://git.kernel.org/stable/c/b4c0d89c92e957ecccce12e66b63875d0cc7af7e
- https://git.kernel.org/stable/c/f7e570780efc5cec9b2ed1e0472a7da14e864fdb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.97
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17