Commit 88aed7fb authored by Kangjie Lu's avatar Kangjie Lu Committed by Greg Kroah-Hartman

gma/gma500: fix a memory disclosure bug due to uninitialized bytes

[ Upstream commit 57a25a5f ]

`best_clock` is an object that may be sent out. Object `clock`
contains uninitialized bytes that are copied to `best_clock`,
which leads to memory disclosure and information leak.
Signed-off-by: default avatarKangjie Lu <kjlu@umn.edu>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191018042953.31099-1-kjlu@umn.eduSigned-off-by: default avatarSasha Levin <sashal@kernel.org>
parent e06cea11
...@@ -415,6 +415,8 @@ static bool cdv_intel_find_dp_pll(const struct gma_limit_t *limit, ...@@ -415,6 +415,8 @@ static bool cdv_intel_find_dp_pll(const struct gma_limit_t *limit,
struct gma_crtc *gma_crtc = to_gma_crtc(crtc); struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
struct gma_clock_t clock; struct gma_clock_t clock;
memset(&clock, 0, sizeof(clock));
switch (refclk) { switch (refclk) {
case 27000: case 27000:
if (target < 200000) { if (target < 200000) {
......
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