Subject: Re: BUG at security/selinux/avc.c:883 (was: Re: linux-next: Tree for July 17: early crash on x86-64)

From: James Morris <jmorris-gx6/[email-masked]>
Date: Tue, 29 Jul 2008 07:38:17 +1000 (EST)

On Mon, 28 Jul 2008, Stephen Smalley wrote:

> SELinux needs MAY_APPEND to be passed down to the security hook.
> Otherwise, we get permission denials when only append permission is
> granted by policy even if the opening process specified O_APPEND.
> Shows up as a regression in the ltp selinux testsuite, fixed by
> this patch.
> 
> Signed-off-by:  Stephen Smalley <[email-masked]>

Applied to  
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6#hotfixes

Al, holler if you want to push this through your tree.

---

 fs/namei.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/namei.c b/fs/namei.c
index a7b0a0b..b91e973 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -274,7 +274,7 @@ int inode_permission(struct inode *inode, int mask)
                return retval;
 
        return security_inode_permission(inode,
-                       mask & (MAY_READ|MAY_WRITE|MAY_EXEC));
+                       mask & (MAY_READ|MAY_WRITE|MAY_EXEC|MAY_APPEND));
 }
 
 /**

- James
-- 
James Morris
<jmorris-gx6/[email-masked]>