From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 29 Oct 2013 19:06:04 +0000 (+0300)
Subject: uml: check length in exitcode_proc_write()
X-Git-Tag: v3.12~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=201f99f170df14ba52ea4c52847779042b7a623b;p=pandora-kernel.git

uml: check length in exitcode_proc_write()

We don't cap the size of buffer from the user so we could write past the
end of the array here.  Only root can write to this file.

Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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