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* sysdeps/unix/sysv/linux/ifaddrs.c (__netlink_sendreq): Make sure 

no uninitialized memory is passed to sendto.
This commit is contained in:
Ulrich Drepper 2006-05-19 07:55:24 +00:00
parent f90de83143
commit 429bb1833e
2 changed files with 9 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2006-05-19 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/ifaddrs.c (__netlink_sendreq): Make sure
no uninitialized memory is passed to sendto.
2006-05-18 Ulrich Drepper <drepper@redhat.com> 2006-05-18 Ulrich Drepper <drepper@redhat.com>
* nis/nis_callback.c (__nis_create_callback): Use asprinf instead * nis/nis_callback.c (__nis_create_callback): Use asprinf instead

5
sysdeps/unix/sysv/linux/ifaddrs.c
View File

@ -89,10 +89,11 @@ __netlink_free_handle (struct netlink_handle *h)
static int static int
__netlink_sendreq (struct netlink_handle *h, int type) __netlink_sendreq (struct netlink_handle *h, int type)
{ {
struct struct req
{ {
struct nlmsghdr nlh; struct nlmsghdr nlh;
struct rtgenmsg g; struct rtgenmsg g;
char pad[0];
} req; } req;
struct sockaddr_nl nladdr; struct sockaddr_nl nladdr;
@ -105,6 +106,8 @@ __netlink_sendreq (struct netlink_handle *h, int type)
req.nlh.nlmsg_pid = 0; req.nlh.nlmsg_pid = 0;
req.nlh.nlmsg_seq = h->seq; req.nlh.nlmsg_seq = h->seq;
req.g.rtgen_family = AF_UNSPEC; req.g.rtgen_family = AF_UNSPEC;
if (sizeof (req) != offsetof (struct req, pad))
memset (req.pad, '\0', sizeof (req) - offsetof (struct req, pad));
memset (&nladdr, '\0', sizeof (nladdr)); memset (&nladdr, '\0', sizeof (nladdr));
nladdr.nl_family = AF_NETLINK; nladdr.nl_family = AF_NETLINK;