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| author | Luis R. Rodriguez | 2013-11-05 18:18:01 +0100 |
|---|---|---|
| committer | Johannes Berg | 2013-11-25 20:51:02 +0100 |
| commit | e438768ff9b22c83a968e14b79e8c83128e8bfe4 (patch) | |
| tree | 956366ad035f64af8965c3a737eaa74598d1e1b6 /net/wireless/reg.c | |
| parent | cfg80211: enforce disabling channels by custom or strict settings (diff) | |
| download | kernel-qcow2-linux-e438768ff9b22c83a968e14b79e8c83128e8bfe4.tar.gz kernel-qcow2-linux-e438768ff9b22c83a968e14b79e8c83128e8bfe4.tar.xz kernel-qcow2-linux-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.c')
| -rw-r--r-- | net/wireless/reg.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c index b4b16871a56e..d8f047aadd49 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -450,7 +450,7 @@ static int call_crda(const char *alpha2) return kobject_uevent(®_pdev->dev.kobj, KOBJ_CHANGE); } -static bool reg_is_valid_request(const char *alpha2) +bool reg_is_valid_request(const char *alpha2) { struct regulatory_request *lr = get_last_request(); |