Date: Tue, 23 Feb 2010 00:41:40 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r204233 - stable/7/sys/compat/linux Message-ID: <201002230041.o1N0febP006486@svn.freebsd.org>
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Author: delphij Date: Tue Feb 23 00:41:40 2010 New Revision: 204233 URL: http://svn.freebsd.org/changeset/base/204233 Log: MFC r203728: - Return EAFNOSUPPORT instead of EINVAL for unsupported address family, this matches the Linux behavior. - Check if we have sufficient space allocated for socket structure, which fixes a buffer overflow when wrong length is being passed into the emulation layer. [1] PR: kern/138860 Submitted by: Mateusz Guzik <mjguzik gmail com> Reported by: Alexander Best [1] Modified: stable/7/sys/compat/linux/linux_socket.c Directory Properties: stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sys/compat/linux/linux_socket.c ============================================================================== --- stable/7/sys/compat/linux/linux_socket.c Tue Feb 23 00:40:02 2010 (r204232) +++ stable/7/sys/compat/linux/linux_socket.c Tue Feb 23 00:41:40 2010 (r204233) @@ -126,7 +126,7 @@ do_sa_get(struct sockaddr **sap, const s bdom = linux_to_bsd_domain(kosa->sa_family); if (bdom == -1) { - error = EINVAL; + error = EAFNOSUPPORT; goto out; } @@ -155,8 +155,13 @@ do_sa_get(struct sockaddr **sap, const s } } else #endif - if (bdom == AF_INET) + if (bdom == AF_INET) { alloclen = sizeof(struct sockaddr_in); + if (*osalen < alloclen) { + error = EINVAL; + goto out; + } + } sa = (struct sockaddr *) kosa; sa->sa_family = bdom;
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