Module Name: src Committed By: snj Date: Sat Aug 19 05:21:56 UTC 2017
Modified Files: src/sys/kern [netbsd-7-0]: kern_ktrace.c Log Message: Pull up following revision(s) (requested by mrg in ticket #1481): sys/kern/kern_ktrace.c: 1.171 via patch Clamp the length we use, not the length we don't. Avoids uninitialized memory disclosure to userland. >From Ilja Van Sprundel. To generate a diff of this commit: cvs rdiff -u -r1.164.4.1 -r1.164.4.1.2.1 src/sys/kern/kern_ktrace.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/kern/kern_ktrace.c diff -u src/sys/kern/kern_ktrace.c:1.164.4.1 src/sys/kern/kern_ktrace.c:1.164.4.1.2.1 --- src/sys/kern/kern_ktrace.c:1.164.4.1 Mon Dec 1 11:38:42 2014 +++ src/sys/kern/kern_ktrace.c Sat Aug 19 05:21:56 2017 @@ -1,4 +1,4 @@ -/* $NetBSD: kern_ktrace.c,v 1.164.4.1 2014/12/01 11:38:42 martin Exp $ */ +/* $NetBSD: kern_ktrace.c,v 1.164.4.1.2.1 2017/08/19 05:21:56 snj Exp $ */ /*- * Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc. @@ -61,7 +61,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: kern_ktrace.c,v 1.164.4.1 2014/12/01 11:38:42 martin Exp $"); +__KERNEL_RCSID(0, "$NetBSD: kern_ktrace.c,v 1.164.4.1.2.1 2017/08/19 05:21:56 snj Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -931,7 +931,7 @@ ktruser(const char *id, void *addr, size user_dta = (void *)(ktp + 1); if ((error = copyin(addr, (void *)user_dta, len)) != 0) - len = 0; + kte->kte_kth.ktr_len = 0; ktraddentry(l, kte, KTA_WAITOK); return error;