From a18ae18a59615b1e7ff82bcf2d5740e2adbf6165 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Fri, 23 Jul 2021 11:14:15 +0200 Subject: [PATCH] tools: dumpimage: Fix crashing when trying to extract data from kwbimage MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Trying to call the following command causes NULL pointer dereference in strlen(): ./tools/dumpimage -T kwbimage -o /tmp/out u-boot-spl.kwb Fix it by checking whether params->imagename is non-NULL before calling strlen(). Signed-off-by: Pali Rohár Reviewed-by: Marek Behún Reviewed-by: Stefan Roese --- tools/kwbimage.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/kwbimage.c b/tools/kwbimage.c index f3b16d94ad..5410df63f5 100644 --- a/tools/kwbimage.c +++ b/tools/kwbimage.c @@ -1867,7 +1867,7 @@ static int kwbimage_generate(struct image_tool_params *params, */ static int kwbimage_check_params(struct image_tool_params *params) { - if (!strlen(params->imagename)) { + if (!params->imagename || !strlen(params->imagename)) { char *msg = "Configuration file for kwbimage creation omitted"; fprintf(stderr, "Error:%s - %s\n", params->cmdname, msg); -- 2.39.5