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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-09 18:09:24 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-02 19:55:09 +0200 |
| commit | 6feb24a33699d47d8a748047ed6d0d5fd2194719 (patch) | |
| tree | 7dd8c1041351a99d1459de5e1589fa03ae1efc5d | |
| parent | 0e7a8c9665bcef96a084c7118c11773e034872f7 (diff) | |
| download | ffmpeg-6feb24a33699d47d8a748047ed6d0d5fd2194719.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 c02b156f0f..22596bd5f8 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -164,7 +164,7 @@ 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]; |