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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-09 18:09:24 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-05 12:43:08 +0200 |
| commit | 1c200201cd58b68586eb9ea2219f48db1050b669 (patch) | |
| tree | 9c6f1b900cbc56934ef4f73f5b406fc8f5eb2797 | |
| parent | b055fa4b1c5a5e0e5365696ad63b80cf8ec1edc6 (diff) | |
| download | ffmpeg-1c200201cd58b68586eb9ea2219f48db1050b669.tar.gz | |
libavcodec/wmalosslessdec: prevent sum of positive numbers from becoming negative
Fixes: left shift of negative value -8321365
Fixes: 20506/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-4798062906310656
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 62e4003780cad60ac1371fef892da08c27069964)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/wmalosslessdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c index 9888ea43d6..0921c16fe5 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -163,7 +163,7 @@ typedef struct WmallDecodeCtx { int transient_pos[WMALL_MAX_CHANNELS]; int seekable_tile; - int ave_sum[WMALL_MAX_CHANNELS]; + unsigned ave_sum[WMALL_MAX_CHANNELS]; int channel_residues[WMALL_MAX_CHANNELS][WMALL_BLOCK_MAX_SIZE]; |