| Message ID | 20200510192019.14218-7-michael@niedermayer.cc |
|---|---|
| State | Accepted |
| Commit | 876cfa67f37e944b0f42cb67b2de4e2e06f52e82 |
| Headers | show |
| Series | [FFmpeg-devel,1/7] avcodec/mpc: Fix multiple numerical overflows in ff_mpc_dequantize_and_synth() | expand |
| Context | Check | Description |
|---|---|---|
| andriy/default | pending | |
| andriy/make | success | Make finished |
| andriy/make_fate | fail | Make fate failed |
On Sun, May 10, 2020 at 09:20:19PM +0200, Michael Niedermayer wrote: > Fixes: signed integer overflow: 2147483594 + 142 cannot be represented in type 'int' > Fixes: 20492/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_UTVIDEO_fuzzer-5658568101724160 > > Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> > --- > libavcodec/utvideodec.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) will apply [...]
diff --git a/libavcodec/utvideodec.c b/libavcodec/utvideodec.c index 4da257fc61..c07636d435 100644 --- a/libavcodec/utvideodec.c +++ b/libavcodec/utvideodec.c @@ -317,7 +317,7 @@ static int decode_plane(UtvideoContext *c, int plane_no, for (i = 0; i < width; i++) { pix = fsym; if (use_pred) { - prev += pix; + prev += (unsigned)pix; pix = prev; } dest[i] = pix;
Fixes: signed integer overflow: 2147483594 + 142 cannot be represented in type 'int' Fixes: 20492/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_UTVIDEO_fuzzer-5658568101724160 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavcodec/utvideodec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)