This is a note to let you know that I've just added the patch titled
ipv6: Check attribute length for RTA_GATEWAY when deleting multipath route
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ipv6-check-attribute-length-for-rta_gateway-when-deleting-multipath-route.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1ff15a710a862db1101b97810af14aedc835a86a Mon Sep 17 00:00:00 2001
From: David Ahern <dsahern@xxxxxxxxxx>
Date: Thu, 30 Dec 2021 17:36:34 -0700
Subject: ipv6: Check attribute length for RTA_GATEWAY when deleting multipath route
From: David Ahern <dsahern@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: Roopa Prabhu <roopa@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ipv6/route.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3365,7 +3365,11 @@ static int ip6_route_multipath_del(struc
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;
}
}
Patches currently in stable-queue which might be from dsahern@xxxxxxxxxx are
queue-4.14/ipv6-check-attribute-length-for-rta_gateway-when-deleting-multipath-route.patch
queue-4.14/ipv6-check-attribute-length-for-rta_gateway-in-multipath-route.patch
