17 matches found
CVE-2024-11149
In OpenBSD 7.4 before errata 014, vmm4 did not restore GDTR limits properly on Intel VMX CPUs...
OpenBSD 安全漏洞
OpenBSD is a cross-platform, BSD-based UNIX-like operating system from the Canadian OpenBSD organization. A security vulnerability exists in versions of OpenBSD prior to 7.4 that stems from vmm not properly recovering the GDTR limit on Intel CPUs...
ALPINE-CVE-2023-34327
This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. AMD CPUs since 2014 have extensions to normal x86 debugging functionality. Xen supports guests using these extensions. Unfortunately there are errors in Xen's handling of...
ALPINE-CVE-2023-34328
This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. AMD CPUs since 2014 have extensions to normal x86 debugging functionality. Xen supports guests using these extensions. Unfortunately there are errors in Xen's handling of...
SUSE CVE-2023-34327
This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. AMD CPUs since 2014 have extensions to normal x86 debugging functionality. Xen supports guests using these extensions. Unfortunately there are errors in Xen's handling of...
SUSE CVE-2023-34328
This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. AMD CPUs since 2014 have extensions to normal x86 debugging functionality. Xen supports guests using these extensions. Unfortunately there are errors in Xen's handling of...
SUSE CVE-2018-10901
A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...
CVE-2021-36710
ToaruOS 1.99.2 is affected by incorrect access control via the kernel. Improper MMU management and having a low GDT address allows it to be mapped in userland. A call gate can then be written to escalate to CPL 0...
PT-2022-10535 · Toaruos · Toaruos
Name of the Vulnerable Software and Affected Versions: ToaruOS version 1.99.2 Description: The issue is related to incorrect access control via the kernel, specifically due to improper MMU management and a low GDT address that allows it to be mapped in userland. This can be exploited by writing a...
kernel: kvm: vmx: host GDT limit corruption
A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...
kernel: kvm: vmx: host GDT limit corruption
A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...
kernel: kvm: vmx: host GDT limit corruption
A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...
kernel: kvm: vmx: host GDT limit corruption
A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...
CVE-2018-10901
A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...
PT-2018-2205 · Linux +2 · Linux Kernel +2
Name of the Vulnerable Software and Affected Versions: Linux kernel's KVM virtualization subsystem affected versions not specified Description: A flaw in the Linux kernel's KVM virtualization subsystem is related to inadequate access control. The issue is caused by the VMX code not restoring the...
kernel: x86: espfix(64) bypass via set_thread_area and CLONE_SETTLS
It was found that the espfix functionality could be bypassed by installing a 16-bit RW data segment into GDT instead of LDT which espfix checks, and using that segment on the stack. A local, unprivileged user could potentially use this flaw to leak kernel stack addresses...
CVE-2014-4403
The kernel in Apple OS X before 10.9.5 allows local users to obtain sensitive address information and bypass the ASLR protection mechanism by leveraging predictability of the location of the CPU Global Descriptor Table...