linux-kernel - Re: [PATCH] Trusted and Encrypted Keys: fix up TSS_rawhmac() so wealways kfree() and remember to call va

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Date:	Fri, 14 Jan 2011 22:45:12 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	safford@...son.ibm.com
Cc:	dhowells@...hat.com, safford@...ibm.com, jmorris@...ei.org,
	keyrings@...ux-nfs.org, linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Trusted and Encrypted Keys: fix up TSS_rawhmac() so wealways kfree() and remember to call va_end()

David Safford wrote:
> On Thu, 2011-01-13 at 21:07 +0100, Jesper Juhl wrote:
> > In security/keys/trusted_defined.c::TSS_rawhmac() we may leak the storage 
> > allocated to 'sdesc' if
> >   data = va_arg(argp, unsigned char *);
> > results in a NULL 'data' and we then leave the function by returning 
> > -EINVAL. We also neglect calling va_end(argp) in that case and furthermore 
> > we neglect va_end(argp) if
> >   ret = crypto_shash_update(&sdesc->shash, data, dlen);
> > results in ret being negative and we then jump to the 'out' label.
> > 
> > I believe this patch takes care of these issues. Please review and 
> > consider for inclusion.
> > 
> > Signed-off-by: Jesper Juhl <jj@...osbits.net>
> 
> thanks for catching this.
> 
> Acked-by: David Safford <safford@...son.ibm.com>

Please wait. That patch is incorrect. I'm making patch now.
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