linux-kernel - Re: [RFC][PATCH v3 01/10] fs: common implementation of file type

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:   Wed, 24 Oct 2018 13:37:40 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Phillip Potter <phil@...lpotter.co.uk>
Cc:     linux-kernel@...r.kernel.org, amir73il@...il.com,
        linux-fsdevel@...r.kernel.org
Subject: Re: [RFC][PATCH v3 01/10] fs: common implementation of file type

On Tue, Oct 23, 2018 at 09:19:53PM +0100, Phillip Potter wrote:

> +static inline unsigned char fs_dtype(int filetype)

That "int" is asking for trouble, especially since negative
argument will blow up.  And it comes from untrusted source...

> +{
> +	if (filetype >= FT_MAX)
> +		return DT_UNKNOWN;
> +
> +	return fs_dtype_by_ftype[filetype];
> +}