Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: KVM: VMX: Fixed a crash caused by uninitialized currentvmcs. KVM enables “Enlightened VMCS” and “Enlightened MSR Bitmap” when running as a nested hypervisor on top of Hyper-V. When the MSR bitmap is updated, the...

CVE-2023-53756

Summary of CVE-2023-53756 (CVE-2023-53756) : The issue is in KVM with Intel VMX where MSR bitmap updates could use a per-CPU current_vmcs that may be uninitialized, allowing a NULL-dereference and potential crash on nested Hyper-V configurations. The root cause is the check for current_vmcs in ev...

CVE-2023-53756

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Fix crash due to uninitialized currentvmcs KVM enables 'Enlightened VMCS' and 'Enlightened MSR Bitmap' when running as a nested hypervisor on top of Hyper-V. When MSR bitmap is updated, evmcstouchmsrbitmap function uses...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from an uninitialized currentvmcs, which could lead to memory corruption...

kernel: KVM: VMX: Fix crash due to uninitialized current_vmcs

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Fix crash due to uninitialized currentvmcs KVM enables 'Enlightened VMCS' and 'Enlightened MSR Bitmap' when running as a nested hypervisor on top of Hyper-V. When MSR bitmap is updated, evmcstouchmsrbitmap function uses...