From f273badc6b317d8d0ba9ba52e873c98a7e72a4e7 Mon Sep 17 00:00:00 2001 From: Jonathan Geisler Date: Wed, 24 Mar 2010 16:02:15 -0700 Subject: calls to cuserid() can result in buffer overruns and/or overflows (cherry picked from commit fd8ccb0427569ffdfbb70c8828029122f3459160) --- sysdeps/posix/cuserid.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'sysdeps') diff --git a/sysdeps/posix/cuserid.c b/sysdeps/posix/cuserid.c index 11c827a686..f30c20e3f8 100644 --- a/sysdeps/posix/cuserid.c +++ b/sysdeps/posix/cuserid.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1996, 1998, 1999, 2001 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1996, 1998, 1999, 2001, 2010 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -44,5 +44,6 @@ cuserid (s) if (s == NULL) s = name; - return strncpy (s, pwptr->pw_name, L_cuserid); + s[L_userid - 1] = '\0'; + return strncpy (s, pwptr->pw_name, L_cuserid - 1); } -- cgit v1.2.3