From: Vasily Averin <vvs@virtuozzo.com>
Date: Thu, 14 Jan 2016 10:41:14 +0000 (+0300)
Subject: cifs_dbg() outputs an uninitialized buffer in cifs_readdir()
X-Git-Tag: v3.2.77~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=32ea1f7a284539346e1bc9bf8655df46d9c68d7f;p=pandora-kernel.git

cifs_dbg() outputs an uninitialized buffer in cifs_readdir()

commit 01b9b0b28626db4a47d7f48744d70abca9914ef1 upstream.

In some cases tmp_bug can be not filled in cifs_filldir and stay uninitialized,
therefore its printk with "%s" modifier can leak content of kernelspace memory.
If old content of this buffer does not contain '\0' access bejond end of
allocated object can crash the host.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Steve French <sfrench@localhost.localdomain>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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