From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lior David , Maya Erez , Kalle Valo , Ben Hutchings , Sasha Levin Subject: [PATCH 4.14 026/146] wil6210: missing length check in wmi_set_ie Date: Tue, 4 Dec 2018 11:48:32 +0100 Message-Id: <20181204103727.910576369@linuxfoundation.org> In-Reply-To: <20181204103726.750894136@linuxfoundation.org> References: <20181204103726.750894136@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ commit b5a8ffcae4103a9d823ea3aa3a761f65779fbe2a upstream. Add a length check in wmi_set_ie to detect unsigned integer overflow. Signed-off-by: Lior David Signed-off-by: Maya Erez Signed-off-by: Kalle Valo Signed-off-by: Ben Hutchings Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/wil6210/wmi.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c index ffdd2fa401b1..d63d7c326801 100644 --- a/drivers/net/wireless/ath/wil6210/wmi.c +++ b/drivers/net/wireless/ath/wil6210/wmi.c @@ -1380,8 +1380,14 @@ int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie) }; int rc; u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len; - struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL); + struct wmi_set_appie_cmd *cmd; + if (len < ie_len) { + rc = -EINVAL; + goto out; + } + + cmd = kzalloc(len, GFP_KERNEL); if (!cmd) { rc = -ENOMEM; goto out; -- 2.17.1