From d790887d1c6ec00d563aedc2f243712815594654 Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Sat, 17 Sep 2016 13:47:17 +0200 Subject: avfilter/vf_unsharp: check if scalebits is too high Otherwise filter would happily give overflows and produce useless output. Signed-off-by: Paul B Mahol --- libavfilter/vf_unsharp.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'libavfilter') diff --git a/libavfilter/vf_unsharp.c b/libavfilter/vf_unsharp.c index d264e24e3c..aea98509ae 100644 --- a/libavfilter/vf_unsharp.c +++ b/libavfilter/vf_unsharp.c @@ -141,6 +141,10 @@ static av_cold int init(AVFilterContext *ctx) set_filter_param(&s->luma, s->lmsize_x, s->lmsize_y, s->lamount); set_filter_param(&s->chroma, s->cmsize_x, s->cmsize_y, s->camount); + if (s->luma.scalebits >= 26 || s->chroma.scalebits >= 26) { + av_log(ctx, AV_LOG_ERROR, "luma or chroma matrix size too big\n"); + return AVERROR(EINVAL); + } s->apply_unsharp = apply_unsharp_c; if (!CONFIG_OPENCL && s->opencl) { av_log(ctx, AV_LOG_ERROR, "OpenCL support was not enabled in this build, cannot be selected\n"); -- cgit v1.2.3