3.0-stable review patch. If anyone has any objections, please let us know.
------------------ From: Anton Blanchard <an...@samba.org> commit 98382f419f32d2c12d021943b87dea555677144b upstream. To limit the amount of time we can spend in sendmmsg, cap the number of elements to UIO_MAXIOV (currently 1024). For error handling an application using sendmmsg needs to retry at the first unsent message, so capping is simpler and requires less application logic than returning EINVAL. Signed-off-by: Anton Blanchard <an...@samba.org> Signed-off-by: David S. Miller <da...@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gre...@suse.de> --- net/socket.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/socket.c +++ b/net/socket.c @@ -1999,6 +1999,9 @@ int __sys_sendmmsg(int fd, struct mmsghd struct compat_mmsghdr __user *compat_entry; struct msghdr msg_sys; + if (vlen > UIO_MAXIOV) + vlen = UIO_MAXIOV; + datagrams = 0; sock = sockfd_lookup_light(fd, &err, &fput_needed); _______________________________________________ stable mailing list stable@linux.kernel.org http://linux.kernel.org/mailman/listinfo/stable