msrle: Use FFABS to determine the frame size in msrle_decode_pal4

As done in msrle_decode_8_16_24_32. Bug-Id: CVE-2015-3395 CC: libav-stable@libav.org
10 years ago · 5ecabd3c54
parent b2f0f37d24
commit 5ecabd3c54
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/msrledec.c
+++ b/libavcodec/msrledec.c
@ -39,7 +39,7 @@ static int msrle_decode_pal4(AVCodecContext *avctx, AVPicture *pic,
    unsigned int pixel_ptr = 0;
    int row_dec = pic->linesize[0];
    int row_ptr = (avctx->height - 1) * row_dec;
-    int frame_size = row_dec * avctx->height;
+    int frame_size = FFABS(row_dec) * avctx->height;
    int i;

    while (row_ptr >= 0) {