From: Luiz Fernando Capitulino <lcapitulino@mandriva.com.br>
Date: Fri, 12 May 2006 01:34:17 +0000 (-0300)
Subject: [PATCH] usbserial: Fixes use-after-free in serial_open().
X-Git-Tag: v2.6.17-rc5~165^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=704936a25bda9bb12e35bb222d5e3f26186dc279;p=pandora-kernel.git

[PATCH] usbserial: Fixes use-after-free in serial_open().

If the device is disconnected while serial_open() is executing and
either try_module_get() or the device specific open function fails, the
kref_put() call in the 'bailout_kref_put' label will free the memory
pointed out by 'port'.

The subsequent dereferences in the 'bailout_kref_put' label will be
invalid.

The fix is just to assure kref_put() is called after any 'port' usage.

Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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