[FFmpeg-devel] [PATCH v3 2/3] avfilter/vf_mix: Check sscanf() return value

[lance.lmwang at gmail.com]

From: Limin Wang <lance.lmwang at gmail.com>

Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
---
 libavfilter/vf_mix.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libavfilter/vf_mix.c b/libavfilter/vf_mix.c
index 9e1ae79..9bb1b7a 100644
--- a/libavfilter/vf_mix.c
+++ b/libavfilter/vf_mix.c
@@ -108,7 +108,10 @@ static av_cold int init(AVFilterContext *ctx)
             break;
 
         p = NULL;
-        av_sscanf(arg, "%f", &s->weights[i]);
+        if (av_sscanf(arg, "%f", &s->weights[i]) != 1) {
+            av_log(ctx, AV_LOG_ERROR, "Invalid syntax for weights[%d].\n", i);
+            return AVERROR(EINVAL);
+        }
         s->wfactor += s->weights[i];
         last = i;
     }
-- 
2.9.5