| Message ID | 20230427183840.1015-2-michael@niedermayer.cc |
|---|---|
| State | New |
| Headers | show |
| Series | [FFmpeg-devel,1/3] tools/target_dec_fuzzer: Adjust threshold for rka | expand |
| Context | Check | Description |
|---|---|---|
| andriy/make_x86 | success | Make finished |
| andriy/make_fate_x86 | success | Make fate finished |
On Thu, Apr 27, 2023 at 08:38:39PM +0200, Michael Niedermayer wrote: > Iam not sure if this buffer setup is intended but if it occurs memcpy() cannot always > be used > > Fixes: memcpy-param-overlap > Fixes: 58062/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-4717458841010176 > > Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> > --- > libavcodec/hevcdec.c | 1 + > 1 file changed, 1 insertion(+) patch withdrawn, as this is not a complete fix of the issue [...]
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c index 0fa4fdd59d..1e590ec5d0 100644 --- a/libavcodec/hevcdec.c +++ b/libavcodec/hevcdec.c @@ -1542,6 +1542,7 @@ static void luma_mc_uni(HEVCLocalContext *lc, uint8_t *dst, ptrdiff_t dststride, src += y_off * srcstride + (x_off * (1 << s->ps.sps->pixel_shift)); if (x_off < QPEL_EXTRA_BEFORE || y_off < QPEL_EXTRA_AFTER || + s->frame->data[0] == ref->data[0] || x_off >= pic_width - block_w - QPEL_EXTRA_AFTER || y_off >= pic_height - block_h - QPEL_EXTRA_AFTER) { const ptrdiff_t edge_emu_stride = EDGE_EMU_BUFFER_STRIDE << s->ps.sps->pixel_shift;
Iam not sure if this buffer setup is intended but if it occurs memcpy() cannot always be used Fixes: memcpy-param-overlap Fixes: 58062/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-4717458841010176 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavcodec/hevcdec.c | 1 + 1 file changed, 1 insertion(+)