KVM: arm64: Fix buffer overflow in kvm_arm_set_fw_reg()
The KVM_REG_SIZE() comes from the ioctl and it can be a power of two between 0-32768 but if it is more than sizeof(long) this will corrupt memory. Fixes: 99adb567 ("KVM: arm/arm64: Add save/restore support for firmware workaround state") Signed-off-by:Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by:
Steven Price <steven.price@arm.com> Reviewed-by:
Eric Auger <eric.auger@redhat.com> Reviewed-by:
Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/4efbab8c-640f-43b2-8ac6-6d68e08280fe@kili.mountainSigned-off-by:
Oliver Upton <oliver.upton@linux.dev>
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