From 429bb1833efe87af5b75153b6c7fa9349cfff501 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 19 May 2006 07:55:24 +0000 Subject: [PATCH] * sysdeps/unix/sysv/linux/ifaddrs.c (__netlink_sendreq): Make sure no uninitialized memory is passed to sendto. --- ChangeLog | 5 +++++ sysdeps/unix/sysv/linux/ifaddrs.c | 5 ++++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/ChangeLog b/ChangeLog index 23110ba7ef..cab8422e52 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2006-05-19 Ulrich Drepper + + * sysdeps/unix/sysv/linux/ifaddrs.c (__netlink_sendreq): Make sure + no uninitialized memory is passed to sendto. + 2006-05-18 Ulrich Drepper * nis/nis_callback.c (__nis_create_callback): Use asprinf instead diff --git a/sysdeps/unix/sysv/linux/ifaddrs.c b/sysdeps/unix/sysv/linux/ifaddrs.c index e6720f0ca2..82495de03e 100644 --- a/sysdeps/unix/sysv/linux/ifaddrs.c +++ b/sysdeps/unix/sysv/linux/ifaddrs.c @@ -89,10 +89,11 @@ __netlink_free_handle (struct netlink_handle *h) static int __netlink_sendreq (struct netlink_handle *h, int type) { - struct + struct req { struct nlmsghdr nlh; struct rtgenmsg g; + char pad[0]; } req; struct sockaddr_nl nladdr; @@ -105,6 +106,8 @@ __netlink_sendreq (struct netlink_handle *h, int type) req.nlh.nlmsg_pid = 0; req.nlh.nlmsg_seq = h->seq; 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)); nladdr.nl_family = AF_NETLINK; -- 2.11.4.GIT