linux-kernel - Re: [PATCH][RFC] HPFS: Don't use pointer to out-of-scope array

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]

Message-ID: <m2mxnuew8a.fsf@whitebox.home>
Date:	Fri, 24 Dec 2010 21:45:09 +0100
From:	Andreas Schwab <schwab@...ux-m68k.org>
To:	Jesper Juhl <jj@...osbits.net>
Cc:	linux-kernel@...r.kernel.org,
	Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>
Subject: Re: [PATCH][RFC] HPFS: Don't use pointer to out-of-scope array

Jesper Juhl <jj@...osbits.net> writes:

> Secondly I fail to see how this code inside the while loop can even work:
>
>   if (hpfs_ea_read(s, a, ano, pos + 4, ea->namelen + 1 + (ea->indirect ? 8 : 0), ex + 4))
>
> There is nothing initializing 'ex' which 'ea' points to, so 
> 'ea->namelen' and 'ea->indirect' are uninitialized.

The preceding hpfs_ea_read should do it (it reads the first 4 bytes of
ex which aliases ea->namelen and ea->indirect).

Andreas.

-- 
Andreas Schwab, schwab@...ux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."
--
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/