If parameter -F is given but FIT support is missing, a NULL pointer might dereferenced (Coverity CID 350249).

If incorrect parameters are given, provide a message and show usage.

Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- tools/mkimage.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/mkimage.c b/tools/mkimage.c index 760145119d..74bd072832 100644 --- a/tools/mkimage.c +++ b/tools/mkimage.c @@ -381,6 +381,11 @@ int main(int argc, char **argv) }

if (params.fflag){ + if (!tparams) { + fprintf(stderr, "%s: Missing FIT support\n", + params.cmdname); + exit (EXIT_FAILURE); + } if (tparams->fflag_handle) /* * in some cases, some additional processing needs @@ -391,7 +396,7 @@ int main(int argc, char **argv) retval = tparams->fflag_handle(&params);

if (retval != EXIT_SUCCESS) - exit (retval); + usage("Bad parameters for FIT image type"); }

if (params.lflag || params.fflag) {