diff options
author | Dan Williams <dan.j.williams@intel.com> | 2018-02-23 11:42:06 +0100 |
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committer | Sasha Levin <alexander.levin@microsoft.com> | 2018-03-04 10:28:33 -0500 |
commit | 8b3c7144b1aac60ac60e3aa96c3d56693e16441e (patch) | |
tree | 06eca365ea3df871c97bb6ae038c024562fc8e30 /Documentation | |
parent | fe6154c8db75495ebe81dbc62f4f49d829988c2d (diff) |
nl80211: Sanitize array index in parse_txq_params
[ Upstream commit 259d8c1e984318497c84eef547bbb6b1d9f4eb05 ]
Wireless drivers rely on parse_txq_params to validate that txq_params->ac
is less than NL80211_NUM_ACS by the time the low-level driver's ->conf_tx()
handler is called. Use a new helper, array_index_nospec(), to sanitize
txq_params->ac with respect to speculation. I.e. ensure that any
speculation into ->conf_tx() handlers is done with a value of
txq_params->ac that is within the bounds of [0, NL80211_NUM_ACS).
Reported-by: Christian Lamparter <chunkeey@gmail.com>
Reported-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-arch@vger.kernel.org
Cc: kernel-hardening@lists.openwall.com
Cc: gregkh@linuxfoundation.org
Cc: linux-wireless@vger.kernel.org
Cc: torvalds@linux-foundation.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: alan@linux.intel.com
Link: https://lkml.kernel.org/r/151727419584.33451.7700736761686184303.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions