Date: Mon, 21 Jan 2019 16:25:41 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r343262 - head/sys/amd64/linux Message-ID: <201901211625.x0LGPfBd047017@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
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 <vlad@tsyrklevich.net> 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) {
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201901211625.x0LGPfBd047017>