linux-kernel - Re: [PATCH 4.19 09/56] btrfs: inode: Verify inode mode to avoid NULL pointer dereference

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]

Date:   Tue, 4 Aug 2020 09:18:36 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Pavel Machek <pavel@...x.de>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Yoon Jungyeon <jungyeon@...ech.edu>,
        Nikolay Borisov <nborisov@...e.com>, Qu Wenruo <wqu@...e.com>,
        David Sterba <dsterba@...e.com>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH 4.19 09/56] btrfs: inode: Verify inode mode to avoid NULL
 pointer dereference

On Tue, Aug 04, 2020 at 09:11:32AM +0200, Pavel Machek wrote:
> Hi!
> 
> 
> > @@ -6993,6 +7010,14 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
> >  	extent_start = found_key.offset;
> >  	if (found_type == BTRFS_FILE_EXTENT_REG ||
> >  	    found_type == BTRFS_FILE_EXTENT_PREALLOC) {
> > +		/* Only regular file could have regular/prealloc extent */
> > +		if (!S_ISREG(inode->vfs_inode.i_mode)) {
> > +			ret = -EUCLEAN;
> > +			btrfs_crit(fs_info,
> > +		"regular/prealloc extent found for non-regular inode %llu",
> > +				   btrfs_ino(inode));
> > +			goto out;
> > +		}
> 
> This sets ret, but function returns err. Fix was already submitted.

What is the git commit id of that fix?

thanks,

greg k-h