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avfilter/vf_avgblur: fix heap-buffer overflow

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Fixes #8274

(cherry picked from commit f069a9c2a6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Paul B Mahol
2019-10-15 16:31:15 +02:00
committed by Michael Niedermayer
parent a9b8eda773
commit ff93d6f710
1 changed files with 1 additions and 1 deletions
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libavfilter/vf_avgblur.c
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@@ -149,7 +149,7 @@ static int filter_vertically_##name(AVFilterContext *ctx, void *arg, int jobnr,
\ \
src = s->buffer + x; \ src = s->buffer + x; \
ptr = buffer + x; \ ptr = buffer + x; \
for (i = 0; i <= radius; i++) { \ for (i = 0; i + radius < height && i <= radius; i++) { \
acc += src[(i + radius) * width]; \ acc += src[(i + radius) * width]; \
count++; \ count++; \
ptr[i * linesize] = acc / count; \ ptr[i * linesize] = acc / count; \