4.4-stable review patch. If anyone has any objections, please let me know.
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From: Ian Kent raven@themaw.net
commit 1e6306652ba18723015d1b4967fe9de55f042499 upstream.
The autofs file system mkdir inode operation blindly sets the created directory mode to S_IFDIR | 0555, ingoring the passed in mode, which can cause selinux dac_override denials.
But the function also checks if the caller is the daemon (as no-one else should be able to do anything here) so there's no point in not honouring the passed in mode, allowing the daemon to set appropriate mode when required.
Link: http://lkml.kernel.org/r/152361593601.8051.14014139124905996173.stgit@pluto.... Signed-off-by: Ian Kent raven@themaw.net Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/autofs4/root.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/autofs4/root.c +++ b/fs/autofs4/root.c @@ -746,7 +746,7 @@ static int autofs4_dir_mkdir(struct inod
autofs4_del_active(dentry);
- inode = autofs4_get_inode(dir->i_sb, S_IFDIR | 0555); + inode = autofs4_get_inode(dir->i_sb, S_IFDIR | mode); if (!inode) return -ENOMEM; d_add(dentry, inode);