From: Phil Sutter <phil@nwl.cc>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: netdev@vger.kernel.org
Subject: [iproute PATCH v2 2/7] ipaddress: Avoid accessing uninitialized variable lcl
Date: Thu, 17 Aug 2017 19:09:26 +0200 [thread overview]
Message-ID: <20170817170931.24302-3-phil@nwl.cc> (raw)
In-Reply-To: <20170817170931.24302-1-phil@nwl.cc>
If no address was given, ipaddr_modify() accesses uninitialized data
when assigning to req.ifa.ifa_prefixlen.
Signed-off-by: Phil Sutter <phil@nwl.cc>
---
ip/ipaddress.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index 3c9decb51b412..9307c9416dde3 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -1888,7 +1888,7 @@ static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
char *lcl_arg = NULL;
char *valid_lftp = NULL;
char *preferred_lftp = NULL;
- inet_prefix lcl;
+ inet_prefix lcl = {};
inet_prefix peer;
int local_len = 0;
int peer_len = 0;
--
2.13.1
next prev parent reply other threads:[~2017-08-17 17:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-17 17:09 [iproute PATCH v2 0/7] Covscan: Don't access garbage Phil Sutter
2017-08-17 17:09 ` [iproute PATCH v2 1/7] ipaddress: Make buffer for filter.flushb static Phil Sutter
2017-08-18 11:57 ` Phil Sutter
2017-08-18 15:55 ` Stephen Hemminger
2017-08-17 17:09 ` Phil Sutter [this message]
2017-08-17 17:09 ` [iproute PATCH v2 3/7] iplink_can: Prevent overstepping array bounds Phil Sutter
2017-08-17 17:09 ` [iproute PATCH v2 4/7] ipmaddr: Avoid accessing uninitialized data Phil Sutter
2017-08-17 17:09 ` [iproute PATCH v2 5/7] ss: Use C99 initializer in netlink_show_one() Phil Sutter
2017-08-17 17:09 ` [iproute PATCH v2 6/7] netem/maketable: Check return value of fstat() Phil Sutter
2017-08-17 17:09 ` [iproute PATCH v2 7/7] tc/q_multiq: Don't pass garbage in TCA_OPTIONS Phil Sutter
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