From: Richard Purdie Date: Fri, 18 Sep 2015 23:31:33 +0000 (-0700) Subject: HID: core: Avoid uninitialized buffer access X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=79b568b9d0c7c5d81932f4486d50b38efdd6da6d;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git HID: core: Avoid uninitialized buffer access hid_connect adds various strings to the buffer but they're all conditional. You can find circumstances where nothing would be written to it but the kernel will still print the supposedly empty buffer with printk. This leads to corruption on the console/in the logs. Ensure buf is initialized to an empty string. Signed-off-by: Richard Purdie [dvhart: Initialize string to "" rather than assign buf[0] = NULL;] Cc: Jiri Kosina Cc: linux-input@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Darren Hart Signed-off-by: Jiri Kosina --- diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index bcd914a63af2..4130685fca7c 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1611,7 +1611,7 @@ int hid_connect(struct hid_device *hdev, unsigned int connect_mask) "Multi-Axis Controller" }; const char *type, *bus; - char buf[64]; + char buf[64] = ""; unsigned int i; int len; int ret;