ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinha...@gmail.com> | Sat Oct 31 14:07:27 2020 +0100| [d9363b56a6b134e90fff8098cbd46a642f9cf99d] | committer: Andreas Rheinhardt
avformat/apngdec: Check fcTL chunk length when reading header Reading the header terminates when an fcTL chunk is encountered in which case read_header returned success without checking the length of said chunk. Yet when read_packet processes this chunk, it checks for the length to be 26 and errors out otherwise. So do so when reading the header, too. Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d9363b56a6b134e90fff8098cbd46a642f9cf99d --- libavformat/apngdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/apngdec.c b/libavformat/apngdec.c index d8d0de190f..6b2ce2e251 100644 --- a/libavformat/apngdec.c +++ b/libavformat/apngdec.c @@ -226,7 +226,7 @@ static int apng_read_header(AVFormatContext *s) ctx->num_frames, ctx->num_play); break; case MKTAG('f', 'c', 'T', 'L'): - if (!acTL_found) { + if (!acTL_found || len != 26) { ret = AVERROR_INVALIDDATA; goto fail; } _______________________________________________ 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".