X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavfilter%2Fvf_signature.c;h=d07b213f3125a0b5689393a6351586b543a92bd7;hb=c71e1e60305669c225c696dd99f6db5dc550a56a;hp=f0078ba1a6eb11a2a146f42cfd9e33821a429cd7;hpb=cfff6d1f777cdf4ddd5004b29e13ac33d22341f5;p=ffmpeg

diff --git a/libavfilter/vf_signature.c b/libavfilter/vf_signature.c
index f0078ba1a6e..d07b213f312 100644
--- a/libavfilter/vf_signature.c
+++ b/libavfilter/vf_signature.c
@@ -576,7 +576,8 @@ static int export(AVFilterContext *ctx, StreamContext *sc, int input)
         /* error already handled */
         av_assert0(av_get_frame_filename(filename, sizeof(filename), sic->filename, input) == 0);
     } else {
-        strcpy(filename, sic->filename);
+        if (av_strlcpy(filename, sic->filename, sizeof(filename)) >= sizeof(filename))
+            return AVERROR(EINVAL);
     }
     if (sic->format == FORMAT_XML) {
         return xml_export(ctx, sc, filename);