Fixes: addition of unsigned offset to 0x7f56fc26a9b6 overflowed to
0x7f56fc26a8be*
Fixes:
clusterfuzz-testcase-minimized-mediasource_MP4_AVC1_pipeline_integration_fuzzer-4917949056679936
Reported-by: Matt Wolenetz <wolen...@google.com>
Reviewed-by: Matt Wolenetz <wolen...@google.com>
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/videodsp_template.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/videodsp_template.c b/libavcodec/videodsp_template.c
index 94c1b7188d..eae2f1d51b 100644
--- a/libavcodec/videodsp_template.c
+++ b/libavcodec/videodsp_template.c
@@ -44,7 +44,7 @@ void FUNC(ff_emulated_edge_mc)(uint8_t *buf, const uint8_t
*src,
src_y = 1 - block_h;
}
if (src_x >= w) {
- src += (w - 1 - src_x) * sizeof(pixel);
+ src -= (1 + src_x - w) * sizeof(pixel);
src_x = w - 1;
} else if (src_x <= -block_w) {
src += (1 - block_w - src_x) * sizeof(pixel);
--
2.21.0
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