[patch 01/31] Fix another NULL pointer deref in ipv6_sockglue.c

Greg KH
2007-03-19T21:38:57Z

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-stable review patch. If anyone has any objections, please let us know.

------------------

From: Olaf Kirch <olaf.kirch@oracle.com>

[IPV6]: Fix for ipv6_setsockopt NULL dereference

I came across this bug in http://bugzilla.kernel.org/show_bug.cgi?id=8155

Signed-off-by: Olaf Kirch <olaf.kirch@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
net/ipv6/ipv6_sockglue.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -414,7 +414,7 @@ static int do_ipv6_setsockopt(struct soc
}

/* routing header option needs extra check */
- if (optname == IPV6_RTHDR && opt->srcrt) {
+ if (optname == IPV6_RTHDR && opt && opt->srcrt) {
struct ipv6_rt_hdr *rthdr = opt->srcrt;
switch (rthdr->type) {
case IPV6_SRCRT_TYPE_0:

--