From owner-svn-src-head@freebsd.org Mon Jan 21 16:25:41 2019 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D22AF14AE41D; Mon, 21 Jan 2019 16:25:41 +0000 (UTC) (envelope-from emaste@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 7216369A93; Mon, 21 Jan 2019 16:25:41 +0000 (UTC) (envelope-from emaste@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 229501C1FC; Mon, 21 Jan 2019 16:25:41 +0000 (UTC) (envelope-from emaste@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x0LGPfaH047018; Mon, 21 Jan 2019 16:25:41 GMT (envelope-from emaste@FreeBSD.org) Received: (from emaste@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x0LGPfBd047017; Mon, 21 Jan 2019 16:25:41 GMT (envelope-from emaste@FreeBSD.org) Message-Id: <201901211625.x0LGPfBd047017@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: emaste set sender to emaste@FreeBSD.org using -f From: Ed Maste Date: Mon, 21 Jan 2019 16:25:41 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r343262 - head/sys/amd64/linux X-SVN-Group: head X-SVN-Commit-Author: emaste X-SVN-Commit-Paths: head/sys/amd64/linux X-SVN-Commit-Revision: 343262 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 7216369A93 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.97 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_SHORT(-0.98)[-0.978,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_MEDIUM(-1.00)[-0.995,0]; NEURAL_HAM_LONG(-1.00)[-0.999,0] X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jan 2019 16:25:42 -0000 Author: emaste Date: Mon Jan 21 16:25:40 2019 New Revision: 343262 URL: https://svnweb.freebsd.org/changeset/base/343262 Log: linuxulator: fix stack memory disclosure in linux_sigaltstack admbugs: 765 Reported by: Vlad Tsyrklevich Reviewed by: andrew MFC after: 1 day Security: Kernel memory disclosure Sponsored by: The FreeBSD Foundation Modified: head/sys/amd64/linux/linux_machdep.c Modified: head/sys/amd64/linux/linux_machdep.c ============================================================================== --- head/sys/amd64/linux/linux_machdep.c Mon Jan 21 16:21:03 2019 (r343261) +++ head/sys/amd64/linux/linux_machdep.c Mon Jan 21 16:25:40 2019 (r343262) @@ -201,6 +201,7 @@ linux_sigaltstack(struct thread *td, struct linux_siga l_stack_t lss; int error; + memset(&lss, 0, sizeof(lss)); LINUX_CTR2(sigaltstack, "%p, %p", uap->uss, uap->uoss); if (uap->uss != NULL) {