From: Michael Buesch <mb@bu3sch.de>
Date: Mon, 20 Jul 2009 22:58:44 +0000 (+0000)
Subject: parisc: isa-eeprom - Fix loff_t usage
X-Git-Tag: v2.6.27.46~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f059b24d2a9f0f15766d0f77acaaa3c8a163a3a;p=pandora-kernel.git

parisc: isa-eeprom - Fix loff_t usage

commit 6b4dbcd86a9d464057fcc7abe4d0574093071fcc upstream.

loff_t is a signed type. If userspace passes a negative ppos, the "count"
range check is weakened. "count"s bigger than HPEE_MAX_LENGTH will pass the check.
Also, if ppos is negative, the readb(eisa_eeprom_addr + *ppos) will poke in random
memory.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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