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fix buffer overflow in ifaddrs.c

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jenkins: ok to test

Signed-off-by: Tw <tw19881113@gmail.com>
This commit is contained in:
tw19881113@gmail.com 2015-12-30 15:24:43 +08:00 committed by Tw
parent cb65e5d71b
commit da4cacd1fa
1 changed files with 3 additions and 1 deletions
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2
src/include/ifaddrs.c
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@ -473,7 +473,9 @@ static void interpretAddr(struct nlmsghdr *p_hdr, struct ifaddrs **p_links, stru
{ {
l_mask[i] = 0xff; l_mask[i] = 0xff;
} }
if (l_prefix % 8) {
l_mask[i] = 0xff << (8 - (l_prefix % 8)); l_mask[i] = 0xff << (8 - (l_prefix % 8));
}
makeSockaddr(l_entry->ifa_addr->sa_family, (struct sockaddr *)l_addr, l_mask, l_maxPrefix / 8); makeSockaddr(l_entry->ifa_addr->sa_family, (struct sockaddr *)l_addr, l_mask, l_maxPrefix / 8);
l_entry->ifa_netmask = (struct sockaddr *)l_addr; l_entry->ifa_netmask = (struct sockaddr *)l_addr;