From: Limin Wang <lance.lmw...@gmail.com> Signed-off-by: Limin Wang <lance.lmw...@gmail.com> --- libavcodec/ccaption_dec.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/libavcodec/ccaption_dec.c b/libavcodec/ccaption_dec.c index 34f0513b1a..8f61e8aa03 100644 --- a/libavcodec/ccaption_dec.c +++ b/libavcodec/ccaption_dec.c @@ -852,6 +852,11 @@ static int decode(AVCodecContext *avctx, AVSubtitle *sub, int i; unsigned nb_rect_allocated = 0; + if (len < 3) { + ff_dlog(avctx, "incomplete or broken packet"); + return len; + } + for (i = 0; i < len; i += 3) { uint8_t hi, cc_type = bptr[i] & 1; @@ -922,7 +927,7 @@ static int decode(AVCodecContext *avctx, AVSubtitle *sub, } *got_sub = sub->num_rects > 0; - return ret; + return len; } #define OFFSET(x) offsetof(CCaptionSubContext, x) -- 2.35.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".