ffmpeg | branch: master | Limin Wang <lance.lmw...@gmail.com> | Sun Apr 10 22:20:04 2022 +0800| [8e828ee1add997ff3d1ca5539773a15df6b9f05e] | committer: Limin Wang
avformat/sccenc: avoid potential invalid access Signed-off-by: Limin Wang <lance.lmw...@gmail.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8e828ee1add997ff3d1ca5539773a15df6b9f05e --- libavformat/sccenc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavformat/sccenc.c b/libavformat/sccenc.c index c8c4d097e4..2b924ba6e7 100644 --- a/libavformat/sccenc.c +++ b/libavformat/sccenc.c @@ -72,11 +72,11 @@ static int scc_write_packet(AVFormatContext *avf, AVPacket *pkt) s = (int)(pts / 1000) % 60; f = (int)(pts % 1000) / 33; - for (i = 0; i < pkt->size; i+=3) { + for (i = 0; i < pkt->size - 2; i+=3) { if (pkt->data[i] == 0xfc && ((pkt->data[i + 1] != 0x80 || pkt->data[i + 2] != 0x80))) break; } - if (i >= pkt->size) + if (i >= pkt->size - 2) return 0; if (!scc->inside && (scc->prev_h != h || scc->prev_m != m || scc->prev_s != s || scc->prev_f != f)) { _______________________________________________ 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".
