diff --git a/libavcodec/msrledec.c b/libavcodec/msrledec.c index db8de7032d..129f0e0bc0 100644 --- a/libavcodec/msrledec.c +++ b/libavcodec/msrledec.c @@ -140,7 +140,7 @@ static int msrle_decode_8_16_24_32(AVCodecContext *avctx, AVPicture *pic, int de output = pic->data[0] + (avctx->height - 1) * pic->linesize[0]; output_end = pic->data[0] + avctx->height * pic->linesize[0]; - while(src < data + srcsize) { + while(src + 1 < data + srcsize) { p1 = *src++; if(p1 == 0) { //Escape code p2 = *src++; @@ -172,6 +172,10 @@ static int msrle_decode_8_16_24_32(AVCodecContext *avctx, AVPicture *pic, int de src += p2 * (depth >> 3); continue; } + if(data + srcsize - src < p2 * (depth >> 3)){ + av_log(avctx, AV_LOG_ERROR, "Copy beyond input buffer\n"); + return -1; + } if ((depth == 8) || (depth == 24)) { for(i = 0; i < p2 * (depth >> 3); i++) { *output++ = *src++; diff --git a/tests/ref/fate/aasc b/tests/ref/fate/aasc index 07b326983d..5da230f052 100644 --- a/tests/ref/fate/aasc +++ b/tests/ref/fate/aasc @@ -21,4 +21,4 @@ 0, 72000, 168000, 0x646fa087 0, 75600, 168000, 0x404450a2 0, 79200, 168000, 0x5214c456 -0, 82800, 168000, 0xe573025c +0, 82800, 168000, 0xaef602d3