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regulatory: add NUL to alpha2 

commit a5fe8e7695dc3f547e955ad2b662e3e72969e506 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.

Change-Id: I69b96063dea000a9eda665abc992e1397a263f5c
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>
This commit is contained in:
Eliad Peller 2014-06-11 10:23:35 +03:00 committed by syphyr
parent 677b10d8da
commit 42c9613ba1
1 changed files with 1 additions and 1 deletions
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2
include/net/regulatory.h
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@ -106,7 +106,7 @@ struct ieee80211_reg_rule {
struct ieee80211_regdomain {
struct rcu_head rcu_head;
u32 n_reg_rules;
char alpha2[2];
char alpha2[3];
u8 dfs_region;
struct ieee80211_reg_rule reg_rules[];
};