X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Faacdec.c;h=f3656c056ad47a564126891dbf37adda20d0dd80;hb=f78f3df7e01c266e83a98285fa3b5cd5823dab4d;hp=726ea03dc42c8475d9eea36526f3ddaecee0fcc6;hpb=5729acee8214170f212b6409ac363428152d05ff;p=ffmpeg

diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index 726ea03dc42..f3656c056ad 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -431,6 +431,8 @@ static int read_payload_length_info(struct LATMContext *ctx, GetBitContext *gb)
     if (ctx->frame_length_type == 0) {
         int mux_slot_length = 0;
         do {
+            if (get_bits_left(gb) < 8)
+                return AVERROR_INVALIDDATA;
             tmp = get_bits(gb, 8);
             mux_slot_length += tmp;
         } while (tmp == 255);
@@ -460,7 +462,7 @@ static int read_audio_mux_element(struct LATMContext *latmctx,
     }
     if (latmctx->audio_mux_version_A == 0) {
         int mux_slot_length_bytes = read_payload_length_info(latmctx, gb);
-        if (mux_slot_length_bytes * 8 > get_bits_left(gb)) {
+        if (mux_slot_length_bytes < 0 || mux_slot_length_bytes * 8LL > get_bits_left(gb)) {
             av_log(latmctx->aac_ctx.avctx, AV_LOG_ERROR, "incomplete frame\n");
             return AVERROR_INVALIDDATA;
         } else if (mux_slot_length_bytes * 8 + 256 < get_bits_left(gb)) {