regulatory: add NUL to alpha2
commit a5fe8e7695
upstream.
alpha2 is defined as 2-chars array, but is used in multiple
places as string (e.g. with nla_put_string calls), which
might leak kernel data.
Solve it by simply adding an extra char for the NULL
terminator, making such operations safe.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -160,7 +160,7 @@ struct ieee80211_reg_rule {
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struct ieee80211_regdomain {
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struct rcu_head rcu_head;
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u32 n_reg_rules;
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char alpha2[2];
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char alpha2[3];
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enum nl80211_dfs_regions dfs_region;
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struct ieee80211_reg_rule reg_rules[];
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};
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