From 2dc1f3a02b1ef76a8614728a3ebbfc82be75dce1 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 15 Nov 2015 21:17:05 +0100 Subject: [PATCH] avcodec/jpeg2000dec: Fix potential integer overflow with tile dimensions Signed-off-by: Michael Niedermayer (cherry picked from commit 65d3359fb366ea265a8468d76a111cb7352f0b55) Signed-off-by: Michael Niedermayer --- libavcodec/jpeg2000dec.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 2389dc1139..214ff056d7 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -831,10 +831,10 @@ static int init_tile(Jpeg2000DecoderContext *s, int tileno) if (!tile->comp) return AVERROR(ENOMEM); - tile->coord[0][0] = av_clip(tilex * s->tile_width + s->tile_offset_x, s->image_offset_x, s->width); - tile->coord[0][1] = av_clip((tilex + 1) * s->tile_width + s->tile_offset_x, s->image_offset_x, s->width); - tile->coord[1][0] = av_clip(tiley * s->tile_height + s->tile_offset_y, s->image_offset_y, s->height); - tile->coord[1][1] = av_clip((tiley + 1) * s->tile_height + s->tile_offset_y, s->image_offset_y, s->height); + tile->coord[0][0] = av_clip(tilex * (int64_t)s->tile_width + s->tile_offset_x, s->image_offset_x, s->width); + tile->coord[0][1] = av_clip((tilex + 1) * (int64_t)s->tile_width + s->tile_offset_x, s->image_offset_x, s->width); + tile->coord[1][0] = av_clip(tiley * (int64_t)s->tile_height + s->tile_offset_y, s->image_offset_y, s->height); + tile->coord[1][1] = av_clip((tiley + 1) * (int64_t)s->tile_height + s->tile_offset_y, s->image_offset_y, s->height); for (compno = 0; compno < s->ncomponents; compno++) { Jpeg2000Component *comp = tile->comp + compno;