CVE-2021-47277

In the Linux kernel, the following vulnerability has been resolved: kvm: avoid speculation-based attacks from out-of-range memslot accesses KVM's mechanism for accessing guest memory translates a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn an...

DEBIAN-CVE-2021-47276

In the Linux kernel, the following vulnerability has been resolved: ftrace: Do not blindly read the ip address in ftracebug It was reported that a bug on arm64 caused a bad ip address to be used for updating into a nop in ftraceinit, but the error path rightfully returned -EINVAL and not -EFAULT,...

UBUNTU-CVE-2021-47325

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak in address translation The reference counting issue happens in several exception handling paths of armsmmuiovatophyshard. When those error scenarios occur, the function forgets to...

UBUNTU-CVE-2021-47327

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak when armsmmurpmget fails armsmmurpmget invokes pmruntimegetsync, which increases the refcount of the "smmu" even though the return value is less than 0. The reference counting issue...

CVE-2021-47277

In the Linux kernel, the following vulnerability has been resolved: kvm: avoid speculation-based attacks from out-of-range memslot accesses KVM's mechanism for accessing guest memory translates a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn an...

CVE-2021-47327

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak when armsmmurpmget fails armsmmurpmget invokes pmruntimegetsync, which increases the refcount of the "smmu" even though the return value is less than 0. The reference counting issue...

CVE-2021-47325

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak in address translation The reference counting issue happens in several exception handling paths of armsmmuiovatophyshard. When those error scenarios occur, the function forgets to...

CVE-2021-47327 iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak when armsmmurpmget fails armsmmurpmget invokes pmruntimegetsync, which increases the refcount of the "smmu" even though the return value is less than 0. The reference counting issue...

CVE-2021-47327 iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak when armsmmurpmget fails armsmmurpmget invokes pmruntimegetsync, which increases the refcount of the "smmu" even though the return value is less than 0. The reference counting issue...

CVE-2021-47327

The Linux kernel contains a reference counting vulnerability in the iommu/arm-smmu driver (specifically the arm_smmu_device refcount). The root cause is that the arm_smmu_rpm_get() function invokes pm_runtime_get_sync(), which increments the "smmu" refcount even when the return value is less than...

CVE-2021-47327

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak when armsmmurpmget fails armsmmurpmget invokes pmruntimegetsync, which increases the refcount of the "smmu" even though the return value is less than 0. The reference counting issue...

CVE-2021-47325

CVE-2021-47325 concerns the Linux kernel’s iommu/arm-smmu subsystem. The issue is a refcount leak in arm_smmu_iova_to_phys_hard() where, on several error paths, the refcount of the underlying smmu object, increased by arm_smmu_rpm_get(), is not decremented. The fixed workaround described in the p...

CVE-2021-47325 iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak in address translation The reference counting issue happens in several exception handling paths of armsmmuiovatophyshard. When those error scenarios occur, the function forgets to...

CVE-2021-47325

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak in address translation The reference counting issue happens in several exception handling paths of armsmmuiovatophyshard. When those error scenarios occur, the function forgets to...

CVE-2021-47277

CVE-2021-47277 affects the Linux kernel KVM path for guest memory translation. The issue arises when speculative execution may use an invalid guest frame number (gfn) to compute an out-of-bounds host virtual address (hva) in __gfn_to_hva_memslot, enabling a potential two-read Spectre gadget where...

CVE-2021-47277 kvm: avoid speculation-based attacks from out-of-range memslot accesses

In the Linux kernel, the following vulnerability has been resolved: kvm: avoid speculation-based attacks from out-of-range memslot accesses KVM's mechanism for accessing guest memory translates a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn an...

CVE-2021-47277 kvm: avoid speculation-based attacks from out-of-range memslot accesses

In the Linux kernel, the following vulnerability has been resolved: kvm: avoid speculation-based attacks from out-of-range memslot accesses KVM's mechanism for accessing guest memory translates a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn an...

CVE-2021-47277

In the Linux kernel, the following vulnerability has been resolved: kvm: avoid speculation-based attacks from out-of-range memslot accesses KVM's mechanism for accessing guest memory translates a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn an...

CVE-2021-47325: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak in address translation The reference counting issue happens in several exception handling paths of armsmmuiovatophyshard. When those error scenarios occur, the function forgets to...

CVE-2021-47327: Improper Update of Reference Count

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak when armsmmurpmget fails armsmmurpmget invokes pmruntimegetsync, which increases the refcount of the "smmu" even though the return value is less than 0. The reference counting issue...