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authorThomas Graf <tgraf@suug.ch>2007-03-24 20:32:54 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-03-25 18:48:03 -0700
commita0ee18b9b7d3847976c6fb315c06a34fb296de0e (patch)
tree5ebef9a68b3aba01c0d8b3285429ae47bb287c9a /net
parent954b2e7f4c37cbcdcf4ca7ac47524f3f6bf30119 (diff)
[IPv4] fib: Fix out of bound access of fib_props[]
Fixes a typo which caused fib_props[] to have the wrong size and makes sure the value used to index the array which is provided by userspace via netlink is checked to avoid out of bound access. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/fib_frontend.c5
-rw-r--r--net/ipv4/fib_semantics.c2
2 files changed, 6 insertions, 1 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 1fba6439fc5..fc920f63452 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -493,6 +493,11 @@ static int rtm_to_fib_config(struct sk_buff *skb, struct nlmsghdr *nlh,
cfg->fc_nlinfo.pid = NETLINK_CB(skb).pid;
cfg->fc_nlinfo.nlh = nlh;
+ if (cfg->fc_type > RTN_MAX) {
+ err = -EINVAL;
+ goto errout;
+ }
+
nlmsg_for_each_attr(attr, nlh, sizeof(struct rtmsg), remaining) {
switch (attr->nla_type) {
case RTA_DST:
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 2f1fdae6efa..3dad12ee76c 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -89,7 +89,7 @@ static const struct
{
int error;
u8 scope;
-} fib_props[RTA_MAX + 1] = {
+} fib_props[RTN_MAX + 1] = {
{
.error = 0,
.scope = RT_SCOPE_NOWHERE,