From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kalle Valo Subject: Re: libertas: fix improper return value Date: Thu, 19 Jan 2017 12:39:13 +0000 (UTC) Message-ID: <20170119123913.B75AE60911@smtp.codeaurora.org> References: <1480760857-4549-1-git-send-email-bianpan2016@163.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: Andreas Kemnade , Johannes Berg , libertas-dev@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Pan Bian To: Pan Bian Return-path: In-Reply-To: <1480760857-4549-1-git-send-email-bianpan2016@163.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Pan Bian wrote: > Function lbs_cmd_802_11_sleep_params() always return 0, even if the call > to lbs_cmd_with_response() fails. In this case, the parameter @sp will > keep uninitialized. Because the return value is 0, its caller (say > lbs_sleepparams_read()) will not detect the error, and will copy the > uninitialized stack memory to user sapce, resulting in stack information > leak. To avoid the bug, this patch returns variable ret (which takes > the return value of lbs_cmd_with_response()) instead of 0. > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188451 > > Signed-off-by: Pan Bian Patch applied to wireless-drivers-next.git, thanks. 259010c509b6 libertas: fix improper return value -- https://patchwork.kernel.org/patch/9459597/ Documentation about submitting wireless patches and checking status from patchwork: https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches