Skip site navigation (1)Skip section navigation (2) 
Date:      Tue, 28 Jan 2020 18:57:45 +0000 (UTC)
From:      Gordon Tetlow <gordon@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org
Subject:   svn commit: r357219 - in releng: 11.3/sys/kern 12.0/sys/kern 12.1/sys/kern
Message-ID:  <202001281857.00SIvjeF038017@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help 
Author: gordon
Date: Tue Jan 28 18:57:45 2020
New Revision: 357219
URL: https://svnweb.freebsd.org/changeset/base/357219

Log:
  Fix kernel stack data disclosure
  
  Reported by:	Ilja Van Sprundel
  Approved by:	so
  Security:	FreeBSD-SA-20:03.thrmisc
  Security:	CVE-2019-15875

Modified:
  releng/11.3/sys/kern/imgact_elf.c
  releng/12.0/sys/kern/imgact_elf.c
  releng/12.1/sys/kern/imgact_elf.c

Modified: releng/11.3/sys/kern/imgact_elf.c
==============================================================================
--- releng/11.3/sys/kern/imgact_elf.c	Tue Jan 28 18:56:46 2020	(r357218)
+++ releng/11.3/sys/kern/imgact_elf.c	Tue Jan 28 18:57:45 2020	(r357219)
@@ -2007,7 +2007,7 @@ __elfN(note_thrmisc)(void *arg, struct sbuf *sb, size_
 	td = (struct thread *)arg;
 	if (sb != NULL) {
 		KASSERT(*sizep == sizeof(thrmisc), ("invalid size"));
-		bzero(&thrmisc._pad, sizeof(thrmisc._pad));
+		bzero(&thrmisc, sizeof(thrmisc));
 		strcpy(thrmisc.pr_tname, td->td_name);
 		sbuf_bcat(sb, &thrmisc, sizeof(thrmisc));
 	}

Modified: releng/12.0/sys/kern/imgact_elf.c
==============================================================================
--- releng/12.0/sys/kern/imgact_elf.c	Tue Jan 28 18:56:46 2020	(r357218)
+++ releng/12.0/sys/kern/imgact_elf.c	Tue Jan 28 18:57:45 2020	(r357219)
@@ -2022,7 +2022,7 @@ __elfN(note_thrmisc)(void *arg, struct sbuf *sb, size_
 	td = (struct thread *)arg;
 	if (sb != NULL) {
 		KASSERT(*sizep == sizeof(thrmisc), ("invalid size"));
-		bzero(&thrmisc._pad, sizeof(thrmisc._pad));
+		bzero(&thrmisc, sizeof(thrmisc));
 		strcpy(thrmisc.pr_tname, td->td_name);
 		sbuf_bcat(sb, &thrmisc, sizeof(thrmisc));
 	}

Modified: releng/12.1/sys/kern/imgact_elf.c
==============================================================================
--- releng/12.1/sys/kern/imgact_elf.c	Tue Jan 28 18:56:46 2020	(r357218)
+++ releng/12.1/sys/kern/imgact_elf.c	Tue Jan 28 18:57:45 2020	(r357219)
@@ -2211,7 +2211,7 @@ __elfN(note_thrmisc)(void *arg, struct sbuf *sb, size_
 	td = (struct thread *)arg;
 	if (sb != NULL) {
 		KASSERT(*sizep == sizeof(thrmisc), ("invalid size"));
-		bzero(&thrmisc._pad, sizeof(thrmisc._pad));
+		bzero(&thrmisc, sizeof(thrmisc));
 		strcpy(thrmisc.pr_tname, td->td_name);
 		sbuf_bcat(sb, &thrmisc, sizeof(thrmisc));
 	}

Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?202001281857.00SIvjeF038017>