Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Nicholas Piggin bb85717e37 KVM: do not allow mapping valid but non-reference-counted pages ... commit f8be156be163a052a067306417cd0ff679068c97 upstream. It's possible to create a region which maps valid but non-refcounted pages (e.g., tail pages of non-compound higher order allocations). These host pages can then be returned by gfn_to_page, gfn_to_pfn, etc., family of APIs, which take a reference to the page, which takes it from 0 to 1. When the reference is dropped, this will free the page incorrectly. Fix this by only taking a reference on valid pages if it was non-zero, which indicates it is participating in normal refcounting (and can be released with put_page). This addresses CVE-2021-22543. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Tested-by: Paolo Bonzini <pbonzini@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-06-30 08:47:50 -04:00
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arm	KVM: arm/arm64: Fix KVM_VGIC_V3_ADDR_TYPE_REDIST read	2021-06-23 14:41:31 +02:00
async_pf.c
async_pf.h
coalesced_mmio.c	KVM: Stop looking for coalesced MMIO zones if the bus is destroyed	2021-05-14 09:44:15 +02:00
coalesced_mmio.h
eventfd.c
irqchip.c
Kconfig
kvm_main.c	KVM: do not allow mapping valid but non-reference-counted pages	2021-06-30 08:47:50 -04:00
vfio.c
vfio.h