From f3f575e3950b7a800f3fc7018ddbba24abb5d607 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Fri, 15 Oct 2021 00:04:59 +0200
Subject: avcodec/ttadsp: Fix integer overflows in tta_filter_process_c()
Fixes: signed integer overflow: 822841647 + 1647055738 cannot be represented in type 'int'
Fixes: 39935/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TTA_fuzzer-4592657142251520
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit f24028c798397af720acb838357785aa705a8122)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/ttadsp.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/libavcodec/ttadsp.c b/libavcodec/ttadsp.c
index 1d1443aee0..99dd66a0c2 100644
--- a/libavcodec/ttadsp.c
+++ b/libavcodec/ttadsp.c
@@ -47,9 +47,9 @@ static void tta_filter_process_c(int32_t *qmi, int32_t *dx, int32_t *dl,
*error = *in;
*in += (round >> shift);
- dl[4] = -dl[5]; dl[5] = -dl[6];
- dl[6] = *in - dl[7]; dl[7] = *in;
- dl[5] += dl[6]; dl[4] += dl[5];
+ dl[4] = -(unsigned)dl[5]; dl[5] = -(unsigned)dl[6];
+ dl[6] = *in -(unsigned)dl[7]; dl[7] = *in;
+ dl[5] += (unsigned)dl[6]; dl[4] += (unsigned)dl[5];
}
av_cold void ff_ttadsp_init(TTADSPContext *c)
--
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