linux-kernel - Re: [PATCH][stable] b44 WOL setup: one-bit-off stack corruption kernel panic fix

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] [day] [month] [year] [list]

Date:	Tue, 08 Dec 2009 21:00:35 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	sbrabec@...e.cz
Cc:	zambrano@...adcom.com, linux-kernel@...r.kernel.org,
	stable@...nel.org, netdev@...r.kernel.org
Subject: Re: [PATCH][stable] b44 WOL setup: one-bit-off stack corruption
 kernel panic fix

From: Stanislav Brabec <sbrabec@...e.cz>
Date: Thu, 03 Dec 2009 15:56:28 +0100

> About 50% of shutdowns of b44 Ethernet adapter ends by kernel panic with
> kernels compiled with stack-protector.
> 
> Checking b44_magic_pattern() return values, one call of
> b44_magic_pattern() returns 127. It means, that set_bit(128, pmask) was
> called on line 1509. It means that bit 0 of 17th byte of pmask was
> overwritten. But pmask has only 16 bytes. Stack corruption happens.
>  
> It seems that set_bit() on line 1509 always writes one bit off.
> 
> The fix does not only solve the stack corruption, but also makes Wake On
> LAN working on my onboard B44 on Asus A7V-333X mainboard.
> 
> It seems that this problem affects all kernel versions since commit
> 725ad800 on 2006-06-20.
> 
> Signed-off-by: Stanislav Brabec <sbrabec@...e.cz>

Applied, thanks.
--
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/