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| author | Luis R. Rodriguez <mcgrof@do-not-panic.com> | 2013-11-05 09:18:01 -0800 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-11-25 20:51:02 +0100 |
| commit | e438768ff9b22c83a968e14b79e8c83128e8bfe4 (patch) | |
| tree | 956366ad035f64af8965c3a737eaa74598d1e1b6 /net/wireless/reg.h | |
| parent | cc493e4f5296f4da111f25ea4a216bb77270ccc6 (diff) | |
| download | lwn-e438768ff9b22c83a968e14b79e8c83128e8bfe4.tar.gz lwn-e438768ff9b22c83a968e14b79e8c83128e8bfe4.zip | |
cfg80211: check regulatory request alpha2 early
Currently nl80211 allows userspace to send the kernel
a bogus regulatory domain with at most 32 rules set
and it won't reject it until after its allocated
memory. Let's be smart about it and take advantage
that the last_request is now available under RTNL
and check if the alpha2 matches an expected request
and reject any bogus userspace requests prior to
hitting the memory allocator.
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/reg.h')
| -rw-r--r-- | net/wireless/reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/wireless/reg.h b/net/wireless/reg.h index 9677e3c13da9..b4076babaf47 100644 --- a/net/wireless/reg.h +++ b/net/wireless/reg.h @@ -18,6 +18,7 @@ extern const struct ieee80211_regdomain __rcu *cfg80211_regdomain; +bool reg_is_valid_request(const char *alpha2); bool is_world_regdom(const char *alpha2); bool reg_supported_dfs_region(u8 dfs_region); |