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Properly validte arguments for route deletion

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Reported by: Liang Zhuo brightiup.zhuo@gmail.com
MFC after:	1 week
This commit is contained in:
gnn 2019-08-03 14:42:07 +00:00
parent 779520855e
commit 40bd736195
1 changed files with 2 additions and 0 deletions
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2
sys/net/route.c
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@ -1590,6 +1590,8 @@ rtrequest1_fib(int req, struct rt_addrinfo *info, struct rtentry **ret_nrt,
switch (req) { switch (req) {
case RTM_DELETE: case RTM_DELETE:
if (netmask) { if (netmask) {
if (dst->sa_len > sizeof(mdst))
return (EINVAL);
rt_maskedcopy(dst, (struct sockaddr *)&mdst, netmask); rt_maskedcopy(dst, (struct sockaddr *)&mdst, netmask);
dst = (struct sockaddr *)&mdst; dst = (struct sockaddr *)&mdst;
} }