ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Jul 11 20:49:08 2024 +0200| [759aae590c0298414db4d2925a33b084d7f9e7f9] | committer: Michael Niedermayer
avformat/sauce: Check avio_size() for failure Fixes: CID1604592 Overflowed constant Sponsored-by: Sovereign Tech Fund Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=759aae590c0298414db4d2925a33b084d7f9e7f9 --- libavformat/sauce.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/libavformat/sauce.c b/libavformat/sauce.c index 150be4705b..96e9bfc337 100644 --- a/libavformat/sauce.c +++ b/libavformat/sauce.c @@ -34,7 +34,12 @@ int ff_sauce_read(AVFormatContext *avctx, uint64_t *fsize, int *got_width, int g AVIOContext *pb = avctx->pb; char buf[36]; int datatype, filetype, t1, t2, nb_comments; - uint64_t start_pos = avio_size(pb) - 128; + int64_t start_pos = avio_size(pb); + + if (start_pos < 128) + return AVERROR_INVALIDDATA; + + start_pos -= 128; avio_seek(pb, start_pos, SEEK_SET); if (avio_read(pb, buf, 7) != 7) _______________________________________________ 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".
