From 2abeb1802e3c005b17a7123e382171b3fb665971 Mon Sep 17 00:00:00 2001 From: Gert Wollny Date: Tue, 8 Oct 2019 17:27:01 +0200 Subject: [PATCH] vrend: check that the transfer iov holds enough data for the data upload Closes #140 Signed-off-by: Gert Wollny Reviewed-by: Emil Velikov --- src/vrend_renderer.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/src/vrend_renderer.c b/src/vrend_renderer.c index 694e1d0..fe23846 100644 --- a/src/vrend_renderer.c +++ b/src/vrend_renderer.c @@ -7005,15 +7005,22 @@ static int vrend_renderer_transfer_write_iov(struct vrend_context *ctx, invert = true; } + send_size = util_format_get_nblocks(res->base.format, info->box->width, + info->box->height) * elsize; + if (res->target == GL_TEXTURE_3D || + res->target == GL_TEXTURE_2D_ARRAY || + res->target == GL_TEXTURE_CUBE_MAP_ARRAY) + send_size *= info->box->depth; + if (need_temp) { - send_size = util_format_get_nblocks(res->base.format, info->box->width, - info->box->height) * elsize * info->box->depth; data = malloc(send_size); if (!data) return ENOMEM; read_transfer_data(iov, num_iovs, data, res->base.format, info->offset, stride, layer_stride, info->box, invert); } else { + if (send_size > iov[0].iov_len - info->offset) + return EINVAL; data = (char*)iov[0].iov_base + info->offset; }