From 74d127b537d18cc9a2bf2b556900705f7b2af2be Mon Sep 17 00:00:00 2001 From: Stefano Sabatini Date: Fri, 8 Oct 2010 23:36:35 +0000 Subject: [PATCH] Add validity checks for the unsharp filter. Prevent crash. Originally committed as revision 25419 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavfilter/vf_unsharp.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libavfilter/vf_unsharp.c b/libavfilter/vf_unsharp.c index fa6227589f..e7bf95333d 100644 --- a/libavfilter/vf_unsharp.c +++ b/libavfilter/vf_unsharp.c @@ -133,6 +133,13 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque) sscanf(args, "%d:%d:%lf:%d:%d:%lf", &lmsize_x, &lmsize_y, &lamount, &cmsize_x, &cmsize_y, &camount); + if (lmsize_x < 2 || lmsize_y < 2 || cmsize_x < 2 || cmsize_y < 2) { + av_log(ctx, AV_LOG_ERROR, + "Invalid value <2 for lmsize_x:%d or lmsize_y:%d or cmsize_x:%d or cmsize_y:%d\n", + lmsize_x, lmsize_y, cmsize_x, cmsize_y); + return AVERROR(EINVAL); + } + set_filter_param(&unsharp->luma, lmsize_x, lmsize_y, lamount); set_filter_param(&unsharp->chroma, cmsize_x, cmsize_y, camount);