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avcodec/jpeg2000dec: Fix potential integer overflow with tile dimensions 

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-11-15 21:17:05 +01:00
parent 6ef819c40b
commit 65d3359fb3
1 changed files with 4 additions and 4 deletions
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8
libavcodec/jpeg2000dec.c
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@ -830,10 +830,10 @@ static int init_tile(Jpeg2000DecoderContext *s, int tileno)
if (!tile->comp) if (!tile->comp)
return AVERROR(ENOMEM); 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][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) * 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 * s->tile_height + s->tile_offset_y, s->image_offset_y, s->height); 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) * 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++) { for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno; Jpeg2000Component *comp = tile->comp + compno;