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| /openbmc/linux/net/ipv6/ |
| H A D | addrconf.c | diff 2beb6d2901a3f73106485d560c49981144aeacb1 Wed Dec 11 08:20:16 CST 2019 Hangbin Liu <liuhangbin@gmail.com> ipv6/addrconf: only check invalid header values when NETLINK_F_STRICT_CHK is set
In commit 4b1373de73a3 ("net: ipv6: addr: perform strict checks also for
doit handlers") we add strict check for inet6_rtm_getaddr(). But we did
the invalid header values check before checking if NETLINK_F_STRICT_CHK
is set. This may break backwards compatibility if user already set the
ifm->ifa_prefixlen, ifm->ifa_flags, ifm->ifa_scope in their netlink code.
I didn't move the nlmsg_len check because I thought it's a valid check.
Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: 4b1373de73a3 ("net: ipv6: addr: perform strict checks also for doit handlers")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
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