Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-sta...@libav.org
---
libavcodec/qdm2.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/libavcodec/qdm2.c b/libavcodec/qdm2.c
index 91c47a8..6acb7d8 100644
--- a/libavcodec/qdm2.c
+++ b/libavcodec/qdm2.c
@@ -1819,6 +1819,10 @@ static av_cold int qdm2_decode_init(AVCodecContext
*avctx)
extradata += 4;
s->checksum_size = AV_RB32(extradata);
+ if (s->checksum_size >= 1U << 28) {
+ av_log(avctx, AV_LOG_ERROR, "data block size too large (%u)\n",
s->checksum_size);
+ return AVERROR_INVALIDDATA;
+ }
s->fft_order = av_log2(s->fft_size) + 1;
s->fft_frame_size = 2 * s->fft_size; // complex has two floats
--
1.7.7.3
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