linux-kernel - Re: broken ownership of /proc/sys/ files on 2.6.27

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

Message-ID: <20081116221910.GQ28946@ZenIV.linux.org.uk>
Date:	Sun, 16 Nov 2008 22:19:10 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Peter Palfrader <peter@...frader.org>, linux-kernel@...r.kernel.org
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: broken ownership of /proc/sys/ files on 2.6.27

On Sun, Nov 16, 2008 at 09:59:22PM +0100, Peter Palfrader wrote:
> Hi,
> 
> on several (probably all) of my systems running a 2.6.27 kernel on at
> least i386, amd64, ia64, sparc proc/sys does have files not owned by
> root:

D'oh...

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 94fcfff..06ed10b 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -31,6 +31,7 @@ static struct inode *proc_sys_make_inode(struct super_block *sb,
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
 	inode->i_flags |= S_PRIVATE; /* tell selinux to ignore this inode */
 	inode->i_mode = table->mode;
+	inode->i_uid = inode->i_gid = 0;
 	if (!table->child) {
 		inode->i_mode |= S_IFREG;
 		inode->i_op = &proc_sys_inode_operations;
--
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/