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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-04-16 17:19:10 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-05-06 00:22:26 +0200 |
| commit | 2632e9049391d820bde64d1fc138567a66464fcd (patch) | |
| tree | ccb6f55cf8e3a028d343e236b2d7ebbee08a3af2 /libavcodec | |
| parent | 34056a94eab5f8fbc7e0b8510f7c9851931f23b7 (diff) | |
| download | ffmpeg-2632e9049391d820bde64d1fc138567a66464fcd.tar.gz | |
avcodec/sonic: Fix two undefined integer overflows
Fixes: signed integer overflow: 2147483372 - -148624 cannot be represented in type 'int'
Fixes: 45982/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SONIC_fuzzer-5477177805373440
Fixes: 45982/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SONIC_fuzzer-6681622236233728
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/sonic.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/sonic.c b/libavcodec/sonic.c index 62e6193ac6..0544fecf46 100644 --- a/libavcodec/sonic.c +++ b/libavcodec/sonic.c @@ -473,7 +473,7 @@ static void predictor_init_state(int *k, int *state, int order) static int predictor_calc_error(int *k, int *state, int order, int error) { - int i, x = error - shift_down(k[order-1] * (unsigned)state[order-1], LATTICE_SHIFT); + int i, x = error - (unsigned)shift_down(k[order-1] * (unsigned)state[order-1], LATTICE_SHIFT); #if 1 int *k_ptr = &(k[order-2]), @@ -1013,7 +1013,7 @@ static int sonic_decode_frame(AVCodecContext *avctx, AVFrame *frame, if (s->lossless) quant = 1; else - quant = get_symbol(&c, state, 0) * SAMPLE_FACTOR; + quant = get_symbol(&c, state, 0) * (unsigned)SAMPLE_FACTOR; // av_log(NULL, AV_LOG_INFO, "quant: %d\n", quant); |