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| author | Matthias Schiffer <mschiffer@universe-factory.net> | 2017-06-27 14:42:43 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-27 14:40:35 -0400 |
| commit | 019b13ae85260cfab9d7ccb6ca58f094d18a24fd (patch) | |
| tree | 090b93abb8ec16bcc299e0db8fe7b912460ade61 /drivers/net/vxlan.c | |
| parent | c017ce0a9ad753e3835d7f8f5fca89960380e816 (diff) | |
| download | linux-019b13ae85260cfab9d7ccb6ca58f094d18a24fd.tar.gz linux-019b13ae85260cfab9d7ccb6ca58f094d18a24fd.tar.bz2 linux-019b13ae85260cfab9d7ccb6ca58f094d18a24fd.zip | |
vxlan: fix incorrect nlattr access in MTU check
The access to the wrong variable could lead to a NULL dereference and
possibly other invalid memory reads in vxlan newlink/changelink requests
with a IFLA_MTU attribute.
Fixes: a985343ba906 "vxlan: refactor verification and application of configuration"
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 0dafd8e6c665..fd0ff97e3d81 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2727,7 +2727,7 @@ static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[], } if (tb[IFLA_MTU]) { - u32 mtu = nla_get_u32(data[IFLA_MTU]); + u32 mtu = nla_get_u32(tb[IFLA_MTU]); if (mtu < ETH_MIN_MTU || mtu > ETH_MAX_MTU) return -EINVAL; |