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| author | David Ahern <dsahern@kernel.org> | 2021-12-31 03:36:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-11 15:58:49 +0300 |
| commit | e30dead00aaa5a575b10117dad8edc126efc1873 (patch) | |
| tree | 4a80e299f466a5c32d7c8c171515a694be14ba51 /net/ipv6/route.c | |
| parent | 44c90b4e6bcbb10f4066b91e8da9c58d4609768c (diff) | |
| download | linux-e30dead00aaa5a575b10117dad8edc126efc1873.tar.xz | |
ipv6: Check attribute length for RTA_GATEWAY when deleting multipath route
commit 1ff15a710a862db1101b97810af14aedc835a86a upstream.
Make sure RTA_GATEWAY for IPv6 multipath route has enough bytes to hold
an IPv6 address.
Fixes: 6b9ea5a64ed5 ("ipv6: fix multipath route replace error recovery")
Signed-off-by: David Ahern <dsahern@kernel.org>
Cc: Roopa Prabhu <roopa@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv6/route.c')
| -rw-r--r-- | net/ipv6/route.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 9df115e89f6c..1bc81be07ccd 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -4606,7 +4606,11 @@ static int ip6_route_multipath_del(struct fib6_config *cfg, nla = nla_find(attrs, attrlen, RTA_GATEWAY); if (nla) { - nla_memcpy(&r_cfg.fc_gateway, nla, 16); + err = fib6_gw_from_attr(&r_cfg.fc_gateway, nla, + extack); + if (err) + return err; + r_cfg.fc_flags |= RTF_GATEWAY; } } |