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(parent: b22cfcf) | patch
mac80211: validate skb->dev in the tx status path
authorFelix Fietkau <nbd@openwrt.org>
Sat, 8 Sep 2012 09:58:30 +0000 (11:58 +0200)
committerJohannes Berg <johannes.berg@intel.com>
Mon, 10 Sep 2012 16:44:58 +0000 (18:44 +0200)
commit1bad53824305807bb5cf49d6b588dd9d867586c6
tree55f046a4d3c0eec4f2f16b18b586c5e245921a03tree | snapshot (tar.gz zip)
parentb22cfcfcae5b2c1e9b43543b6a23e5ef517de8f8commit | diff
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>
net/mac80211/status.c diff | blob | blame | history