CVE-2025-21779

The CVE-2025-21779 entry concerns Linux kernel KVM on x86 where Hyper-V SEND_IPI/SEND_IPI_EX hypercalls are advertised only when the local APIC is emulated/virtualized by KVM. The fix rejects these hypercalls if the local APIC is emulated in userspace, preventing a NULL-pointer dereference when H...

CVE-2025-21779

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Reject Hyper-V's SENDIPI hypercalls if local APIC isn't in-kernel Advertise support for Hyper-V's SENDIPI and SENDIPIEX hypercalls if and only if the local API is emulated/virtualized by KVM, and explicitly reject said...

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 the KVM not properly handling Hyper-V's SENDIPI hypercalls, which could lead to null pointer dereferences...

CVE-2022-49726

In the Linux kernel, the following vulnerability has been resolved: clocksource: hyper-v: unexport init-annotated hvinitclocksource EXPORTSYMBOL and init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated init. The...

DEBIAN-CVE-2022-49726

In the Linux kernel, the following vulnerability has been resolved: clocksource: hyper-v: unexport init-annotated hvinitclocksource EXPORTSYMBOL and init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated init. The...

UBUNTU-CVE-2022-49726

In the Linux kernel, the following vulnerability has been resolved: clocksource: hyper-v: unexport init-annotated hvinitclocksource EXPORTSYMBOL and init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated init. The...

DEBIAN-CVE-2022-49098

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Fix potential crash on module unload The vmbus driver relies on the panic notifier infrastructure to perform some operations when a panic event is detected. Since vmbus can be built as module, it is required...

DEBIAN-CVE-2022-49054

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Deactivate sysctlrecordpanicmsg by default in isolated guests hvpanicpage might contain guest-sensitive information, do not dump it over to Hyper-V by default in isolated guests. While at it, update some...

CVE-2022-49054

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Deactivate sysctlrecordpanicmsg by default in isolated guests hvpanicpage might contain guest-sensitive information, do not dump it over to Hyper-V by default in isolated guests. While at it, update some...

UBUNTU-CVE-2022-49054

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Deactivate sysctlrecordpanicmsg by default in isolated guests hvpanicpage might contain guest-sensitive information, do not dump it over to Hyper-V by default in isolated guests. While at it, update some...

CVE-2022-49726 clocksource: hyper-v: unexport __init-annotated hv_init_clocksource()

In the Linux kernel, the following vulnerability has been resolved: clocksource: hyper-v: unexport init-annotated hvinitclocksource EXPORTSYMBOL and init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated init. The...

CVE-2022-49726 clocksource: hyper-v: unexport __init-annotated hv_init_clocksource()

In the Linux kernel, the following vulnerability has been resolved: clocksource: hyper-v: unexport init-annotated hvinitclocksource EXPORTSYMBOL and init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated init. The...

CVE-2022-49054

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Deactivate sysctlrecordpanicmsg by default in isolated guests hvpanicpage might contain guest-sensitive information, do not dump it over to Hyper-V by default in isolated guests. While at it, update some...

CVE-2022-49054

CVE-2022-49054 concerns the Linux kernel hv/vmbus subsystem. The documented fix deactivates the sysctl_record_panic_msg by default in isolated Hyper-V guests, to prevent hv_panic_page from leaking guest-sensitive information. It also notes that hv_panic_page may contain sensitive data and should ...

CVE-2022-49054 Drivers: hv: vmbus: Deactivate sysctl_record_panic_msg by default in isolated guests

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Deactivate sysctlrecordpanicmsg by default in isolated guests hvpanicpage might contain guest-sensitive information, do not dump it over to Hyper-V by default in isolated guests. While at it, update some...

CVE-2022-49054 Drivers: hv: vmbus: Deactivate sysctl_record_panic_msg by default in isolated guests

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Deactivate sysctlrecordpanicmsg by default in isolated guests hvpanicpage might contain guest-sensitive information, do not dump it over to Hyper-V by default in isolated guests. While at it, update some...

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, which stems from the hvinitclocksource function of the hyper-v clock source being incorrectly exported...

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 the fact that hvpanicpage may contain sensitive information that should not be dumped to Hyper-V in isolated...

PT-2025-14358

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A hang issue in the kdump kernel has been resolved when running on Hyper-V Gen 2 VMs. The problem occurs when the hyperv fb driver moves the framebuffer to a different MMIO address due t...

About Elevation of Privilege – Windows Hyper-V NT Kernel Integration VSP (CVE-2025-21333, CVE-2025-21334, CVE-2025-21335) vulnerability

About Elevation of Privilege - Windows Hyper-V NT Kernel Integration VSP CVE-2025-21333, CVE-2025-21334, CVE-2025-21335 vulnerability. These three vulnerabilities were disclosed as part of Microsoft's January Patch Tuesday and share the same description. They were found in a component used for...