Mark Rutland 81d27c6ed6 KVM: arm/arm64: vgic: fix possible spectre-v1 in vgic_mmio_read_apr() ... [ Upstream commit 5e1ca5e23b ] It's possible for userspace to control n. Sanitize n when using it as an array index. Note that while it appears that n must be bound to the interval [0,3] due to the way it is extracted from addr, we cannot guarantee that compiler transformations (and/or future refactoring) will ensure this is the case, and given this is a slow path it's better to always perform the masking. Found by smatch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Christoffer Dall <christoffer.dall@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-06-21 04:02:49 +09:00
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kvm	KVM: arm/arm64: vgic: fix possible spectre-v1 in vgic_mmio_read_apr()	2018-06-21 04:02:49 +09:00
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