On 3/18/2021 12:43 AM, Andreas Rheinhardt wrote:
diff --git a/libavformat/webvttenc.c b/libavformat/webvttenc.c
index 552bc38b65..342cba6dd8 100644
--- a/libavformat/webvttenc.c
+++ b/libavformat/webvttenc.c
@@ -72,8 +72,13 @@ static int webvtt_write_packet(AVFormatContext *ctx,
AVPacket *pkt)
id = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_IDENTIFIER,
&id_size);
- if (id && id_size > 0)
- avio_printf(pb, "%.*s\n", id_size, id);
+ if (id && id_size > 0) {
+#if !FF_API_BUFFER_SIZE_T
+ if (id_size > INT_MAX)
+ return AVERROR(ERANGE);
+#endif
+ avio_printf(pb, "%.*s\n", (int)id_size, id);
+ }
webvtt_write_time(pb, pkt->pts);
avio_printf(pb, " --> ");
@@ -82,8 +87,13 @@ static int webvtt_write_packet(AVFormatContext *ctx,
AVPacket *pkt)
settings = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_SETTINGS,
&settings_size);
- if (settings && settings_size > 0)
- avio_printf(pb, " %.*s", settings_size, settings);
+ if (settings && settings_size > 0) {
+#if !FF_API_BUFFER_SIZE_T
+ if (id_size > INT_MAX)
Looks like it should be settings_size.
+ return AVERROR(ERANGE);
+#endif
+ avio_printf(pb, " %.*s", (int)settings_size, settings);
+ }
avio_printf(pb, "\n");
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