From: Rand Deeb <rand.sec96@gmail.com>
To: Jesse Brandeburg <jesse.brandeburg@intel.com>,
Tony Nguyen <anthony.l.nguyen@intel.com>,
"David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: voskresenski.stanislav@confident.ru, deeb.rand@confident.ru,
lvc-project@linuxtesting.org, Rand Deeb <rand.sec96@gmail.com>
Subject: [Intel-wired-lan] [PATCH] net: ice: Fix potential NULL pointer dereference in ice_bridge_setlink()
Date: Wed, 28 Feb 2024 18:54:48 +0300 [thread overview]
Message-ID: <20240228155448.121603-1-rand.sec96@gmail.com> (raw)
The function ice_bridge_setlink() may encounter a NULL pointer dereference
if nlmsg_find_attr() returns NULL and br_spec is dereferenced subsequently
in nla_for_each_nested(). To address this issue, add a check to ensure that
br_spec is not NULL before proceeding with the nested attribute iteration.
Signed-off-by: Rand Deeb <rand.sec96@gmail.com>
---
drivers/net/ethernet/intel/ice/ice_main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 4f0d63fa5709..ba2bbd53d543 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -6530,6 +6530,8 @@ ice_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
pf_sw = pf->first_sw;
/* find the attribute in the netlink message */
br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
+ if (!br_spec)
+ return -EINVAL;
nla_for_each_nested(attr, br_spec, rem) {
__u16 mode;
--
2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Rand Deeb <rand.sec96@gmail.com>
To: Jesse Brandeburg <jesse.brandeburg@intel.com>,
Tony Nguyen <anthony.l.nguyen@intel.com>,
"David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: deeb.rand@confident.ru, lvc-project@linuxtesting.org,
voskresenski.stanislav@confident.ru,
Rand Deeb <rand.sec96@gmail.com>
Subject: [PATCH] net: ice: Fix potential NULL pointer dereference in ice_bridge_setlink()
Date: Wed, 28 Feb 2024 18:54:48 +0300 [thread overview]
Message-ID: <20240228155448.121603-1-rand.sec96@gmail.com> (raw)
The function ice_bridge_setlink() may encounter a NULL pointer dereference
if nlmsg_find_attr() returns NULL and br_spec is dereferenced subsequently
in nla_for_each_nested(). To address this issue, add a check to ensure that
br_spec is not NULL before proceeding with the nested attribute iteration.
Signed-off-by: Rand Deeb <rand.sec96@gmail.com>
---
drivers/net/ethernet/intel/ice/ice_main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 4f0d63fa5709..ba2bbd53d543 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -6530,6 +6530,8 @@ ice_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
pf_sw = pf->first_sw;
/* find the attribute in the netlink message */
br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
+ if (!br_spec)
+ return -EINVAL;
nla_for_each_nested(attr, br_spec, rem) {
__u16 mode;
--
2.34.1
next reply other threads:[~2024-02-28 16:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-28 15:54 Rand Deeb [this message]
2024-02-28 15:54 ` [PATCH] net: ice: Fix potential NULL pointer dereference in ice_bridge_setlink() Rand Deeb
2024-03-01 15:26 ` [Intel-wired-lan] " Simon Horman
2024-03-01 15:26 ` Simon Horman
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