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: <717d0682de4fb24ed6818f2bf264202d22e1e8be.1529415179.git.dcaratti@redhat.com>
Date:   Tue, 19 Jun 2018 15:45:50 +0200
From:   Davide Caratti <dcaratti@...hat.com>
To:     Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: [PATCH net] net/sched: act_ife: preserve the action control in case of error

in the following script

 # tc actions add action ife encode allow prio pass index 42
 # tc actions replace action ife encode allow tcindex drop index 42

the action control should remain equal to 'pass', if the kernel failed
to replace the TC action. Pospone the assignment of the action control,
to ensure it is not overwritten in the error path of tcf_ife_init().

Fixes: ef6980b6becb ("introduce IFE action")
Signed-off-by: Davide Caratti <dcaratti@...hat.com>
---
 net/sched/act_ife.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c
index 078d52212172..20d7d36b2fc9 100644
--- a/net/sched/act_ife.c
+++ b/net/sched/act_ife.c
@@ -517,8 +517,6 @@ static int tcf_ife_init(struct net *net, struct nlattr *nla,
 			saddr = nla_data(tb[TCA_IFE_SMAC]);
 	}
 
-	ife->tcf_action = parm->action;
-
 	if (parm->flags & IFE_ENCODE) {
 		if (daddr)
 			ether_addr_copy(p->eth_dst, daddr);
@@ -575,6 +573,7 @@ static int tcf_ife_init(struct net *net, struct nlattr *nla,
 		}
 	}
 
+	ife->tcf_action = parm->action;
 	if (exists)
 		spin_unlock_bh(&ife->tcf_lock);
 
-- 
2.17.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ