From: Felix Fietkau <nbd@openwrt.org>
Date: Sat, 8 Sep 2012 09:58:30 +0000 (+0200)
Subject: mac80211: validate skb->dev in the tx status path
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~47^2~31^2^2~67^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1bad53824305807bb5cf49d6b588dd9d867586c6;p=pandora-kernel.git

mac80211: validate skb->dev in the tx status path

skb->dev might contain a stale reference to a device that was already
deleted, and using it unchecked can lead to invalid pointer accesses.
Since this is only used for nl80211 tx, iterate over active interfaces
to find a match for skb->dev, and discard the tx status if the device
is gone.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

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