ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinha...@outlook.com> | Mon Jul 4 15:35:04 2022 +0200| [f89446eaff0537bbf6e390584d32375c6b65ea2f] | committer: Andreas Rheinhardt
avformat/apngenc: Check fcTL size The remaining code relies on it having the value it should have. Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f89446eaff0537bbf6e390584d32375c6b65ea2f --- libavformat/apngenc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/apngenc.c b/libavformat/apngenc.c index 7443c77504..1c039685f2 100644 --- a/libavformat/apngenc.c +++ b/libavformat/apngenc.c @@ -27,6 +27,7 @@ #include "libavutil/intreadwrite.h" #include "libavutil/log.h" #include "libavutil/opt.h" +#include "libavcodec/apng.h" #include "libavcodec/png.h" typedef struct APNGMuxContext { @@ -181,6 +182,9 @@ static int flush_packet(AVFormatContext *format_context, AVPacket *packet) if (existing_fcTL_chunk) { AVRational delay; + if (AV_RB32(existing_fcTL_chunk) != APNG_FCTL_CHUNK_SIZE) + return AVERROR_INVALIDDATA; + existing_fcTL_chunk += 8; delay.num = AV_RB16(existing_fcTL_chunk + 20); delay.den = AV_RB16(existing_fcTL_chunk + 22); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
