Maxim Levitsky f757530535 KVM: nSVM: avoid picking up unsupported bits from L2 in int_ctl (CVE-2021-3653) ... commit 0f923e07124df069ba68d8bb12324398f4b6b709 upstream. * Invert the mask of bits that we pick from L2 in nested_vmcb02_prepare_control * Invert and explicitly use VIRQ related bits bitmask in svm_clear_vintr This fixes a security issue that allowed a malicious L1 to run L2 with AVIC enabled, which allowed the L2 to exploit the uninitialized and enabled AVIC to read/write the host physical memory at some offsets. Fixes: 3d6368ef58 ("KVM: SVM: Add VMRUN handler") Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-07-05 18:55:16 +02:00
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asm	KVM: nSVM: avoid picking up unsupported bits from L2 in int_ctl (CVE-2021-3653)	2024-07-05 18:55:16 +02:00
uapi/asm	init: add dsm gpl source	2024-07-05 18:00:04 +02:00