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| author |   Johannes Berg <johannes.berg@intel.com> | 2014-09-10 13:39:56 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-09-11 12:07:28 +0200 |
| commit | 538c9eb8b3fd33d3a0722b2c04ec4f574eaa6e9f (patch) | |
| tree | 738b71b941b78e7708c158eb79b7fabeddf480f4 /net/wireless/wext-compat.c | |
| parent | mac80211: clear key material when freeing keys (diff) | |
| download | linux-dev-538c9eb8b3fd33d3a0722b2c04ec4f574eaa6e9f.tar.xz linux-dev-538c9eb8b3fd33d3a0722b2c04ec4f574eaa6e9f.zip | |
cfg80211: clear wext keys when freeing and removing them
When freeing the keys stored for wireless extensions, clear the memory
to avoid having the key material stick around in memory "forever".
Similarly, when userspace overwrites a key, actually clear it instead
of just setting the key length to zero.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/wext-compat.c')
| -rw-r--r-- | net/wireless/wext-compat.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 11120bb14162..0f47948c572f 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -496,6 +496,8 @@ static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev, err = 0; if (!err) { if (!addr) { + memset(wdev->wext.keys->data[idx], 0, + sizeof(wdev->wext.keys->data[idx])); wdev->wext.keys->params[idx].key_len = 0; wdev->wext.keys->params[idx].cipher = 0; } |