linux-kernel - [PATCH] net: thunderx: correct bound check in nic_config

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-next>] [day] [month] [year] [list]

Message-ID: <1469933384-16827-1-git-send-email-alexander.levin@verizon.com>
Date:	Sat, 30 Jul 2016 22:49:44 -0400
From:	"Levin, Alexander" <alexander.levin@...izon.com>
To:	"sgoutham@...ium.com" <sgoutham@...ium.com>,
	"rric@...nel.org" <rric@...nel.org>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Levin, Alexander" <alexander.levin@...izon.com>
Subject: [PATCH] net: thunderx: correct bound check in nic_config_loopback

Off by one in nic_config_loopback would access an invalid arrat variable when
vf id == MAX_LMAC.

Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 drivers/net/ethernet/cavium/thunder/nic_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c
index 16ed203..a70f50d 100644
--- a/drivers/net/ethernet/cavium/thunder/nic_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nic_main.c
@@ -615,7 +615,7 @@ static int nic_config_loopback(struct nicpf *nic, struct set_loopback *lbk)
 {
 	int bgx_idx, lmac_idx;
 
-	if (lbk->vf_id > MAX_LMAC)
+	if (lbk->vf_id >= MAX_LMAC)
 		return -1;
 
 	bgx_idx = NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[lbk->vf_id]);
-- 
2.7.4