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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-28 19:20:43 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-14 23:30:37 +0100 |
| commit | 99c45c0c82a6e22f1e8caa6bfc08bb655dcf9e42 (patch) | |
| tree | 054405ba007bc647843bcc8ba25840f2e1b8718e | |
| parent | a7acecb0d9e3c96930c284f36205e30100894788 (diff) | |
| download | ffmpeg-99c45c0c82a6e22f1e8caa6bfc08bb655dcf9e42.tar.gz | |
avcodec/rv10: Fix integer overflow in aspect ratio compare
Fixes: signed integer overflow: 2040 * 1187872 cannot be represented in type 'int'
Fixes: 15368/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RV20_fuzzer-5681657136283648
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 14fcf42958608223a0be6558fb6e323419c9fc27)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/rv10.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c index 595e217519..3b9ebbe8fa 100644 --- a/libavcodec/rv10.c +++ b/libavcodec/rv10.c @@ -388,9 +388,9 @@ static int rv20_decode_picture_header(RVDecContext *rv) // attempt to keep aspect during typical resolution switches if (!old_aspect.num) old_aspect = (AVRational){1, 1}; - if (2 * new_w * s->height == new_h * s->width) + if (2 * (int64_t)new_w * s->height == (int64_t)new_h * s->width) s->avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){2, 1}); - if (new_w * s->height == 2 * new_h * s->width) + if ((int64_t)new_w * s->height == 2 * (int64_t)new_h * s->width) s->avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){1, 2}); ret = ff_set_dimensions(s->avctx, new_w, new_h); |