linux-kernel - Re: [ 030/143] proc connector: fix info leaks

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:	Mon, 12 May 2014 10:41:06 +0200
From:	Christoph Biedl <linux-kernel.bfrz@...chmal.in-ulm.de>
To:	Willy Tarreau <w@....eu>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Mathias Krause <minipli@...glemail.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [ 030/143] proc connector: fix info leaks

Willy Tarreau wrote...

> Initialize event_data for all possible message types to prevent leaking
> kernel stack contents to userland (up to 20 bytes). Also set the flags
> member of the connector message to 0 to prevent leaking two more stack
> bytes this way.

There are build errors as shown below and I guess that one is the
culprit. Can do detailled checks tonight, I'm a bit in a hurry right
now.

(Using gcc-4.7 as provided by Debian wheezy)

    Christoph

drivers/connector/cn_proc.c:286:9: error: expected declaration specifiers or '...' before '&' token
drivers/connector/cn_proc.c:286:26: error: expected declaration specifiers or '...' before numeric constant
drivers/connector/cn_proc.c:286:29: error: expected declaration specifiers or '...' before 'sizeof'
drivers/connector/cn_proc.c:287:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before '->' token
make[5]: *** [drivers/connector/cn_proc.o] Error 1
make[4]: *** [drivers/connector] Error 2
make[4]: *** Waiting for unfinished jobs....
--
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/