| From | Kamal Mostafa <> | Subject | [PATCH 3.13 062/212] ipv4: initialise the itag variable in __mkroute_input | Date | Tue, 17 Jun 2014 14:42:36 -0700 |
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3.13.11.4 -stable review patch. If anyone has any objections, please let me know.
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From: Li RongQing <roy.qing.li@gmail.com>
[ Upstream commit fbdc0ad095c0a299e9abf5d8ac8f58374951149a ]
the value of itag is a random value from stack, and may not be initiated by fib_validate_source, which called fib_combine_itag if CONFIG_IP_ROUTE_CLASSID is not set
This will make the cached dst uncertainty
Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- net/ipv4/route.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index de44aee..a25c6e7 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1529,7 +1529,7 @@ static int __mkroute_input(struct sk_buff *skb, struct in_device *out_dev; unsigned int flags = 0; bool do_cache; - u32 itag; + u32 itag = 0; /* get a working reference to the output device */ out_dev = __in_dev_get_rcu(FIB_RES_DEV(*res)); -- 1.9.1
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