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Return EINVAL if namelen isn't large enough to encompass the expected

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members of sockaddr structures. i.e. sa_len and sa_family.

Discussed with and patch by christos@
This commit is contained in:
rtr 2015-03-06 03:35:00 +00:00
parent 09e70b50a6
commit 9f8f228daa
1 changed files with 8 additions and 2 deletions
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10
sys/kern/uipc_syscalls.c
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@ -1,4 +1,4 @@
/* $NetBSD: uipc_syscalls.c,v 1.173 2014/09/05 09:20:59 matt Exp $ */
/* $NetBSD: uipc_syscalls.c,v 1.174 2015/03/06 03:35:00 rtr Exp $ */
/*-
* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@ -61,7 +61,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uipc_syscalls.c,v 1.173 2014/09/05 09:20:59 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: uipc_syscalls.c,v 1.174 2015/03/06 03:35:00 rtr Exp $");
#include "opt_pipe.h"
@ -1463,6 +1463,12 @@ sockargs(struct mbuf **mp, const void *bf, size_t buflen, int type)
if (buflen > (type == MT_SONAME ? UCHAR_MAX : PAGE_SIZE))
return EINVAL;
/*
* length must greater than sizeof(sa_family) + sizeof(sa_len)
*/
if (type == MT_SONAME && buflen <= 2)
return EINVAL;
/* Allocate an mbuf to hold the arguments. */
m = m_get(M_WAIT, type);
/* can't claim. don't who to assign it to. */