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From: Daniel Eischen <deischen@FreeBSD.org>
Date: Fri, 1 Feb 2013 05:19:50 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r246192 - head/usr.sbin/pw
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Author: deischen
Date: Fri Feb  1 05:19:49 2013
New Revision: 246192
URL: http://svnweb.freebsd.org/changeset/base/246192

Log:
  Prevent a null pointer dereference in pw userdel when deleting
  a user whose group != username.

Modified:
  head/usr.sbin/pw/pw_user.c

Modified: head/usr.sbin/pw/pw_user.c
==============================================================================
--- head/usr.sbin/pw/pw_user.c	Fri Feb  1 03:49:09 2013	(r246191)
+++ head/usr.sbin/pw/pw_user.c	Fri Feb  1 05:19:49 2013	(r246192)
@@ -425,7 +425,7 @@ pw_user(struct userconf * cnf, int mode,
 			}
 
 			grp = GETGRNAM(a_name->val);
-			if (*grp->gr_mem == NULL)
+			if (grp != NULL && *grp->gr_mem == NULL)
 				delgrent(GETGRNAM(a_name->val));
 			SETGRENT();
 			while ((grp = GETGRENT()) != NULL) {