From: Kangjie Lu kjlu@umn.edu
[ Upstream commit 57a25a5f754ce27da2cfa6f413cfd366f878db76 ]
`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: Kangjie Lu kjlu@umn.edu Signed-off-by: Daniel Vetter daniel.vetter@ffwll.ch Link: https://patchwork.freedesktop.org/patch/msgid/20191018042953.31099-1-kjlu@um... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/gma500/cdv_intel_display.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/gma500/cdv_intel_display.c b/drivers/gpu/drm/gma500/cdv_intel_display.c index f56852a503e8d..8b784947ed3b9 100644 --- a/drivers/gpu/drm/gma500/cdv_intel_display.c +++ b/drivers/gpu/drm/gma500/cdv_intel_display.c @@ -405,6 +405,8 @@ static bool cdv_intel_find_dp_pll(const struct gma_limit_t *limit, struct gma_crtc *gma_crtc = to_gma_crtc(crtc); struct gma_clock_t clock;
+ memset(&clock, 0, sizeof(clock)); + switch (refclk) { case 27000: if (target < 200000) {