linux-kernel - Re: [PATCH] 2.6.19-rc2-mm2 sysfs: sysfs_write

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:	Sun, 22 Oct 2006 11:39:24 -0700
From:	Greg KH <gregkh@...e.de>
To:	Thomas Maier <balagi@...tmail.de>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org
Subject: Re: [PATCH] 2.6.19-rc2-mm2 sysfs: sysfs_write_file() writes zero terminated data

On Sun, Oct 22, 2006 at 07:17:47PM +0200, Thomas Maier wrote:
> Hello,
> 
> since most of the files in sysfs are text files,
> it would be nice, if the "store" function called
> during sysfs_write_file() gets a zero terminated
> string / data.
> The current implementation seems not to ensure this.
> (But only if it is the first time the zeroed buffer
> page is allocated.)

Have you seen sysfs buffers being passed to the store() function in a
non-null terminated manner?  How?

Are you seeking backward and then writing again to the file somehow?

thanks,

greg k-h
-
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/