linux-kernel - [PATCH] uselib: add missing MNT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070517135526.GA28213@lst.de>
Date:	Thu, 17 May 2007 15:55:26 +0200
From:	Christoph Hellwig <hch@....de>
To:	akpm@...l.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] uselib: add missing MNT_NOEXEC check

We don't allow loading ELF shared library from noexec points so the
same should apply to sys_uselib aswell.


Signed-off-by: Christoph Hellwig <hch@....de>

Index: linux-2.6/fs/exec.c
===================================================================
--- linux-2.6.orig/fs/exec.c	2007-04-24 14:22:40.000000000 +0200
+++ linux-2.6/fs/exec.c	2007-04-24 14:22:57.000000000 +0200
@@ -133,6 +133,8 @@ asmlinkage long sys_uselib(const char __
 		goto out;
 
 	error = -EINVAL;
+	if (nd.mnt->mnt_flags & MNT_NOEXEC)
+		goto exit;
 	if (!S_ISREG(nd.dentry->d_inode->i_mode))
 		goto exit;
 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/