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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-04-16 15:24:16 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-05-06 00:22:25 +0200 |
| commit | fd7352660be0211aabb11dc6d586836515772f81 (patch) | |
| tree | b220fe93bcc1c99cc4327bafde744e76b73833c3 /libavcodec | |
| parent | 885ff3b8798791eb2b0f53360a2ab4b1f9c5f6dc (diff) | |
| download | ffmpeg-fd7352660be0211aabb11dc6d586836515772f81.tar.gz | |
avcodec/flacdec: Fix signed integre overflow
Fixes: signed integer overflow: 3011809745540902265 + 6323452730883571725 cannot be represented in type 'long'
Fixes: 45982/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLAC_fuzzer-6687553022722048
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/flacdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/flacdec.c b/libavcodec/flacdec.c index cc778a8dff..524a046949 100644 --- a/libavcodec/flacdec.c +++ b/libavcodec/flacdec.c @@ -513,7 +513,7 @@ static int decode_subframe_lpc_33bps(FLACContext *s, int64_t *decoded, for (i = pred_order; i < s->blocksize; i++, decoded++) { int64_t sum = 0; for (j = 0; j < pred_order; j++) - sum += (int64_t)coeffs[j] * decoded[j]; + sum += (int64_t)coeffs[j] * (uint64_t)decoded[j]; decoded[j] = residual[i] + (sum >> qlevel); } |