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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-10 23:58:36 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-11-03 23:29:47 +0100 |
| commit | 4dcc092a5a302349b653ad9eb123443d6a3ed365 (patch) | |
| tree | d8cb4e940ed9d452760347badf73a4e327fa40cd | |
| parent | ef8a0dc80037633b88a2b1e0f40be601f15afc33 (diff) | |
| download | ffmpeg-4dcc092a5a302349b653ad9eb123443d6a3ed365.tar.gz | |
avcodec/mobiclip: Check quantizer for overflow
Fixes: signed integer overflow: 127 + 2147483536 cannot be represented in type 'int'
Fixes: 48798/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOBICLIP_fuzzer-6014034970804224
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 677e27a9afa7305a918336699b377fd5b42cc299)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mobiclip.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/mobiclip.c b/libavcodec/mobiclip.c index 23d64f76f6..281b63a0bc 100644 --- a/libavcodec/mobiclip.c +++ b/libavcodec/mobiclip.c @@ -329,7 +329,7 @@ static av_cold int mobiclip_init(AVCodecContext *avctx) return 0; } -static int setup_qtables(AVCodecContext *avctx, int quantizer) +static int setup_qtables(AVCodecContext *avctx, int64_t quantizer) { MobiClipContext *s = avctx->priv_data; int qx, qy; @@ -1255,7 +1255,7 @@ static int mobiclip_decode(AVCodecContext *avctx, void *data, frame->key_frame = 0; s->dct_tab_idx = 0; - ret = setup_qtables(avctx, s->quantizer + get_se_golomb(gb)); + ret = setup_qtables(avctx, s->quantizer + (int64_t)get_se_golomb(gb)); if (ret < 0) return ret; |