X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fqdmc.c;h=10ceb7aa557cfb1384c0ccd3cc3d663b223a0140;hb=df08db07110dc00f7dc0ca8bc5162fffcb9008c7;hp=8f5b7b920d23e5e0c7106853bc19e5d039f134a5;hpb=f32d2939555706365ad1d39aadd5ee7ce1d9fa4f;p=ffmpeg

diff --git a/libavcodec/qdmc.c b/libavcodec/qdmc.c
index 8f5b7b920d2..10ceb7aa557 100644
--- a/libavcodec/qdmc.c
+++ b/libavcodec/qdmc.c
@@ -367,6 +367,8 @@ static int qdmc_get_vlc(GetBitContext *gb, VLC *table, int flag)
 {
     int v;
 
+    if (get_bits_left(gb) < 1)
+        return AVERROR_INVALIDDATA;
     v = get_vlc2(gb, table->table, table->bits, 1);
     if (v < 0)
         return AVERROR_INVALIDDATA;
@@ -577,9 +579,9 @@ static void add_noise(QDMCContext *s, int ch, int current_subframe)
     for (j = 2; j < s->subframe_size - 1; j++) {
         float rnd_re, rnd_im;
 
-        s->rndval = 214013 * s->rndval + 2531011;
+        s->rndval = 214013U * s->rndval + 2531011;
         rnd_im = ((s->rndval & 0x7FFF) - 16384.0f) * 0.000030517578f * s->noise2_buffer[j];
-        s->rndval = 214013 * s->rndval + 2531011;
+        s->rndval = 214013U * s->rndval + 2531011;
         rnd_re = ((s->rndval & 0x7FFF) - 16384.0f) * 0.000030517578f * s->noise2_buffer[j];
         im[j  ] += rnd_im;
         re[j  ] += rnd_re;