ffmpeg | branch: master | Paul B Mahol <one...@gmail.com> | Tue Oct 15 16:38:40 2019 +0200| [de598f82f8c3f8000e1948548e8088148e2b1f44] | committer: Paul B Mahol
avfilter/vf_edgedetect: fix heap-buffer overflow Fixes #8275 > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=de598f82f8c3f8000e1948548e8088148e2b1f44 --- libavfilter/vf_edgedetect.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/libavfilter/vf_edgedetect.c b/libavfilter/vf_edgedetect.c index ea0efe0de3..25424dbcce 100644 --- a/libavfilter/vf_edgedetect.c +++ b/libavfilter/vf_edgedetect.c @@ -155,7 +155,8 @@ static void gaussian_blur(AVFilterContext *ctx, int w, int h, } for (j = 2; j < h - 2; j++) { dst[0] = src[0]; - dst[1] = src[1]; + if (w > 1) + dst[1] = src[1]; for (i = 2; i < w - 2; i++) { /* Gaussian mask of size 5x5 with sigma = 1.4 */ dst[i] = ((src[-2*src_linesize + i-2] + src[2*src_linesize + i-2]) * 2 @@ -176,8 +177,10 @@ static void gaussian_blur(AVFilterContext *ctx, int w, int h, + src[i+1] * 12 + src[i+2] * 5) / 159; } - dst[i ] = src[i ]; - dst[i + 1] = src[i + 1]; + if (w > 2) + dst[i ] = src[i ]; + if (w > 3) + dst[i + 1] = src[i + 1]; dst += dst_linesize; src += src_linesize; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
