From owner-svn-src-all@FreeBSD.ORG Wed Mar 25 22:45:55 2015 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id ACE7BEF1; Wed, 25 Mar 2015 22:45:55 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 97C8DE44; Wed, 25 Mar 2015 22:45:55 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id t2PMjtMA052492; Wed, 25 Mar 2015 22:45:55 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id t2PMjtgc052491; Wed, 25 Mar 2015 22:45:55 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201503252245.t2PMjtgc052491@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Wed, 25 Mar 2015 22:45:55 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r280642 - head/sys/netinet X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Mar 2015 22:45:55 -0000 Author: tuexen Date: Wed Mar 25 22:45:54 2015 New Revision: 280642 URL: https://svnweb.freebsd.org/changeset/base/280642 Log: Make sure that we don't free an SCTP shared key too early. Thanks to Pouyan Sepehrdad from Qualcomm Product Security Initiative for reporting the issue. MFC after: 3 days Modified: head/sys/netinet/sctp_auth.c Modified: head/sys/netinet/sctp_auth.c ============================================================================== --- head/sys/netinet/sctp_auth.c Wed Mar 25 22:35:08 2015 (r280641) +++ head/sys/netinet/sctp_auth.c Wed Mar 25 22:45:54 2015 (r280642) @@ -576,13 +576,12 @@ sctp_auth_key_release(struct sctp_tcb *s /* decrement the ref count */ if (skey) { - sctp_free_sharedkey(skey); SCTPDBG(SCTP_DEBUG_AUTH2, "%s: stcb %p key %u refcount release to %d\n", __FUNCTION__, (void *)stcb, key_id, skey->refcount); /* see if a notification should be generated */ - if ((skey->refcount <= 1) && (skey->deactivated)) { + if ((skey->refcount <= 2) && (skey->deactivated)) { /* notify ULP that key is no longer used */ sctp_ulp_notify(SCTP_NOTIFY_AUTH_FREE_KEY, stcb, key_id, 0, so_locked); @@ -590,6 +589,7 @@ sctp_auth_key_release(struct sctp_tcb *s "%s: stcb %p key %u no longer used, %d\n", __FUNCTION__, (void *)stcb, key_id, skey->refcount); } + sctp_free_sharedkey(skey); } }