This is a note to let you know that I've just added the patch titled gma/gma500: fix a memory disclosure bug due to uninitialized bytes to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: gma-gma500-fix-a-memory-disclosure-bug-due-to-uninit.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 810f3933ffc872d7702ba4ca35d6866d3c46f64e Author: Kangjie Lu <kjlu@xxxxxxx> Date: Thu Oct 17 23:29:53 2019 -0500 gma/gma500: fix a memory disclosure bug due to uninitialized bytes [ 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@xxxxxxx> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20191018042953.31099-1-kjlu@xxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> 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) {