Commit 308ee8aa authored Feb 01, 2017 by David Binder Committed by Greg Kroah-Hartman Feb 02, 2017

staging: unisys: visorbus: Check controlvm message payload size



Checks the controlvm message's payload size before copying it into a
parser_context struct's name region.

Signed-off-by: David Binder <david.binder@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 0c773962

drivers/staging/unisys/visorbus/visorchipset.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -399,6 +399,10 @@ parser_name_get(struct parser_context *ctx)
		struct spar_controlvm_parameters_header *phdr = NULL;

		phdr = (struct spar_controlvm_parameters_header *)(ctx->data);

		if (phdr->name_offset + phdr->name_length > ctx->param_bytes)
		return NULL;

		ctx->curr = ctx->data + phdr->name_offset;
		ctx->bytes_remaining = phdr->name_length;
		return parser_string_get(ctx);