CVE-2022-48764

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Free kvmcpuidentry2 array on post-KVMRUN KVMSETCPUID,2 Free the "struct kvmcpuidentry2" array on successful post-KVMRUN KVMSETCPUID,2 to fix a memory leak, the callers of kvmsetcpuid free the array only on failure. BUG:...

CVE-2022-48765

In the Linux kernel, the following vulnerability has been resolved: KVM: LAPIC: Also cancel preemption timer during SETLAPIC The below warning is splatting during guest reboot. ------------ cut here ------------ WARNING: CPU: 0 PID: 1931 at arch/x86/kvm/x86.c:10322 kvmarchvcpuioctlrun+0x874/0x880...

CVE-2022-48727

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Avoid consuming a stale esr value when SError occur When any exception other than an IRQ occurs, the CPU updates the ESREL2 register with the exception syndrome. An SError may also become pending, and will be...

UBUNTU-CVE-2022-48764

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Free kvmcpuidentry2 array on post-KVMRUN KVMSETCPUID,2 Free the "struct kvmcpuidentry2" array on successful post-KVMRUN KVMSETCPUID,2 to fix a memory leak, the callers of kvmsetcpuid free the array only on failure. BUG:...

CVE-2021-47578

In the Linux kernel, the following vulnerability has been resolved: scsi: scsidebug: Don't call kcalloc if size arg is zero If the size arg to kcalloc is zero, it returns ZEROSIZEPTR. Because of that, for a following NULL pointer check to work on the returned pointer, kcalloc must not be called...

CVE-2022-48764 KVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2}

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Free kvmcpuidentry2 array on post-KVMRUN KVMSETCPUID,2 Free the "struct kvmcpuidentry2" array on successful post-KVMRUN KVMSETCPUID,2 to fix a memory leak, the callers of kvmsetcpuid free the array only on failure. BUG:...

CVE-2022-48765 KVM: LAPIC: Also cancel preemption timer during SET_LAPIC

In the Linux kernel, the following vulnerability has been resolved: KVM: LAPIC: Also cancel preemption timer during SETLAPIC The below warning is splatting during guest reboot. ------------ cut here ------------ WARNING: CPU: 0 PID: 1931 at arch/x86/kvm/x86.c:10322 kvmarchvcpuioctlrun+0x874/0x880...

CVE-2022-48765 KVM: LAPIC: Also cancel preemption timer during SET_LAPIC

In the Linux kernel, the following vulnerability has been resolved: KVM: LAPIC: Also cancel preemption timer during SETLAPIC The below warning is splatting during guest reboot. ------------ cut here ------------ WARNING: CPU: 0 PID: 1931 at arch/x86/kvm/x86.c:10322 kvmarchvcpuioctlrun+0x874/0x880...

CVE-2022-48764

CVE-2022-48764 concerns the Linux kernel KVM x86 CPUID handling. The provided documents consistently describe a memory-leak issue where the kernel did not free the kvm_cpuid_entry2 array after successful post-KVM_RUN KVM_SET_CPUID{,2} calls, potentially leaving an unreferenced 2048-byte object (e...

CVE-2022-48765

The CVE-2022-48765 entry corresponds to a Linux kernel issue in KVM LAPIC handling during SET_LAPIC. The accompanying (unpatched) Nessus/OpenVAS notes describe a scenario where rebooting a guest with tsc-deadline mode not exposed can trigger a preemption timer cancellation via apic_update_lvtt(),...

CVE-2022-48765 KVM: LAPIC: Also cancel preemption timer during SET_LAPIC

In the Linux kernel, the following vulnerability has been resolved: KVM: LAPIC: Also cancel preemption timer during SETLAPIC The below warning is splatting during guest reboot. ------------ cut here ------------ WARNING: CPU: 0 PID: 1931 at arch/x86/kvm/x86.c:10322 kvmarchvcpuioctlrun+0x874/0x880...

CVE-2022-48765

In the Linux kernel, the following vulnerability has been resolved: KVM: LAPIC: Also cancel preemption timer during SETLAPIC The below warning is splatting during guest reboot. ------------ cut here ------------ WARNING: CPU: 0 PID: 1931 at arch/x86/kvm/x86.c:10322 kvmarchvcpuioctlrun+0x874/0x880...

CVE-2022-48764

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Free kvmcpuidentry2 array on post-KVMRUN KVMSETCPUID,2 Free the "struct kvmcpuidentry2" array on successful post-KVMRUN KVMSETCPUID,2 to fix a memory leak, the callers of kvmsetcpuid free the array only on failure. BUG:...

CVE-2022-48763

CVE-2022-48763 relates to the Linux kernel KVM/x86 nested virtualization when SMM state is toggled. The issue occurs if userspace forces a vCPU out of SMM during post-VMXON and injects an SMI, causing vmx_enter_smm() to overwrite vmx->nested.smm.vmxon and leave vmxon and smm.vmxon false while ...

CVE-2022-48763 KVM: x86: Forcibly leave nested virt when SMM state is toggled

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Forcibly leave nested virt when SMM state is toggled Forcibly leave nested virtualization operation if userspace toggles SMM state via KVMSETVCPUEVENTS or KVMSYNCX86EVENTS. If userspace forces the vCPU out of SMM while...

CVE-2022-48763 KVM: x86: Forcibly leave nested virt when SMM state is toggled

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Forcibly leave nested virt when SMM state is toggled Forcibly leave nested virtualization operation if userspace toggles SMM state via KVMSETVCPUEVENTS or KVMSYNCX86EVENTS. If userspace forces the vCPU out of SMM while...

CVE-2022-48763

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Forcibly leave nested virt when SMM state is toggled Forcibly leave nested virtualization operation if userspace toggles SMM state via KVMSETVCPUEVENTS or KVMSYNCX86EVENTS. If userspace forces the vCPU out of SMM while...

CVE-2022-48763 KVM: x86: Forcibly leave nested virt when SMM state is toggled

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Forcibly leave nested virt when SMM state is toggled Forcibly leave nested virtualization operation if userspace toggles SMM state via KVMSETVCPUEVENTS or KVMSYNCX86EVENTS. If userspace forces the vCPU out of SMM while...

CVE-2022-48727

The CVE-2022-48727 entry concerns a Linux kernel KVM arm64 issue: when non-IRQ exceptions occur, ESR_EL2 is updated and used to detect if an HVC occurred, potentially mis-updating ELR_EL2 if an SError was synchronised and later re-executing guest instructions. The fix ensures ARM_EXCEPTION_CODE()...

CVE-2022-48727 KVM: arm64: Avoid consuming a stale esr value when SError occur

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Avoid consuming a stale esr value when SError occur When any exception other than an IRQ occurs, the CPU updates the ESREL2 register with the exception syndrome. An SError may also become pending, and will be...