linux-kernel - [PATCH AUTOSEL for 4.4 004/115] staging: wilc1000: add check for kmalloc allocation failure.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Sat, 3 Mar 2018 22:30:49 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
CC:     Colin Ian King <colin.king@...onical.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.4 004/115] staging: wilc1000: add check for
 kmalloc allocation failure.

From: Colin Ian King <colin.king@...onical.com>

[ Upstream commit 6cc0c259d034c6ab48f4e12f505213988e73d380 ]

Add a sanity check that wid.val has been allocated, fixes a null
pointer deference on stamac when calling ether_add_copy.

Detected by CoverityScan, CID#1369537 ("Dereference null return value")

Signed-off-by: Colin Ian King <colin.king@...onical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/staging/wilc1000/host_interface.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/wilc1000/host_interface.c b/drivers/staging/wilc1000/host_interface.c
index dbbe72c7e255..f78353ddeea5 100644
--- a/drivers/staging/wilc1000/host_interface.c
+++ b/drivers/staging/wilc1000/host_interface.c
@@ -2179,6 +2179,8 @@ static s32 Handle_Get_InActiveTime(struct host_if_drv *hif_drv,
 	wid.type = WID_STR;
 	wid.size = ETH_ALEN;
 	wid.val = kmalloc(wid.size, GFP_KERNEL);
+	if (!wid.val)
+		return -ENOMEM;
 
 	stamac = wid.val;
 	memcpy(stamac, strHostIfStaInactiveT->mac, ETH_ALEN);
-- 
2.14.1