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* sysdeps/unix/sysv/linux/check_pf.c (make_request): Make sure
	that unused memory passed to sendto is nevertheless initialized.
This commit is contained in:
Ulrich Drepper 2006-05-06 22:07:31 +00:00
parent acb98cb57d
commit b74a8c7f5f
2 changed files with 13 additions and 1 deletions
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3
ChangeLog
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@ -1,5 +1,8 @@
2006-05-06 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/check_pf.c (make_request): Make sure
that unused memory passed to sendto is nevertheless initialized.
[BZ #2499]
* resolv/nss_dns/dns-canon.c (_nss_dns_getcanonname_r): Avoid
possibly unaligned memory accesses.

11
sysdeps/unix/sysv/linux/check_pf.c
View File

@ -17,9 +17,11 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <assert.h>
#include <errno.h>
#include <ifaddrs.h>
#include <netdb.h>
#include <stddef.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
@ -42,10 +44,14 @@ static int
make_request (int fd, pid_t pid, bool *seen_ipv4, bool *seen_ipv6,
struct in6addrinfo **in6ai, size_t *in6ailen)
{
struct
struct req
{
struct nlmsghdr nlh;
struct rtgenmsg g;
/* struct rtgenmsg consists of a single byte. This means there
are three bytes of padding included in the REQ definition.
We make them explicit here. */
char pad[3];
} req;
struct sockaddr_nl nladdr;
@ -56,6 +62,9 @@ make_request (int fd, pid_t pid, bool *seen_ipv4, bool *seen_ipv6,
req.nlh.nlmsg_seq = time (NULL);
req.g.rtgen_family = AF_UNSPEC;
assert (sizeof (req) - offsetof (struct req, pad) == 3);
memset (req.pad, '\0', sizeof (req.pad));
memset (&nladdr, '\0', sizeof (nladdr));
nladdr.nl_family = AF_NETLINK;