The vulnerability of the hyperv_init() function in the arch/x86/hyperv/hv_init.c module, which supports the x86 kernel of the Linux operating system, allows a attacker to cause a service failure.

The vulnerability of the hypervinit function in the arch/x86/hyperv/hvinit.c module, which is part of the Linux operating system’s x86 kernel support, relates to incorrect handling of the absence of a special element. Exploiting this vulnerability can allow an attacker to cause a service failure...

CVE-2021-47217: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: x86/hyperv: Fix NULL deref in sethvtscchangecb if Hyper-V setup fails Check for a valid hvvpindex array prior to derefencing hvvpindex when setting Hyper-V's TSC change callback. If Hyper-V setup failed in hypervinit, the kernel...