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| author | Johannes Berg <johannes.berg@intel.com> | 2013-10-25 13:06:06 +0200 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2013-11-25 23:00:19 +0200 |
| commit | 60765a47a433d54e4744c285ad127f182dcd80aa (patch) | |
| tree | 9c01d7cc7024968e0174ed410a20f92968e4c08a /drivers/net | |
| parent | 9d8506cc2d7ea1f911c72c100193a3677f6668c3 (diff) | |
| download | linux-60765a47a433d54e4744c285ad127f182dcd80aa.tar.gz linux-60765a47a433d54e4744c285ad127f182dcd80aa.tar.bz2 linux-60765a47a433d54e4744c285ad127f182dcd80aa.zip | |
iwlwifi: mvm: check sta_id/drain values in debugfs
The station ID must be valid, if it's out of range then
the array access may crash. Validate the station ID to
the array length, and also validate the drain value even
if that doesn't matter all that much.
Cc: stable@vger.kernel.org
Fixes: 8ca151b568b6 ("iwlwifi: add the MVM driver")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/debugfs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c index 9864d713eb2c..a8fe6b41f9a3 100644 --- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c @@ -119,6 +119,10 @@ static ssize_t iwl_dbgfs_sta_drain_write(struct file *file, if (sscanf(buf, "%d %d", &sta_id, &drain) != 2) return -EINVAL; + if (sta_id < 0 || sta_id >= IWL_MVM_STATION_COUNT) + return -EINVAL; + if (drain < 0 || drain > 1) + return -EINVAL; mutex_lock(&mvm->mutex); |