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Commit 5247a77c authored by Haim Dreyfuss's avatar Haim Dreyfuss Committed by Johannes Berg
Browse files

cfg80211: fix NULL pointer derference when querying regdb 



Some drivers may call this function when regdb is not initialized yet,
so we need to make sure regdb is valid before trying to access it.

Make sure regdb is initialized before trying to access it in
reg_query_regdb_wmm() and query_regdb().

Reported-by: default avatarEric Biggers <ebiggers3@gmail.com>
Signed-off-by: default avatarHaim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 1d6741d8

net/wireless/reg.c

+3 −0
Original line number Diff line number Diff line
@@ -916,6 +916,9 @@ int reg_query_regdb_wmm(char *alpha2, int freq, u32 *dbptr, 
	const struct fwdb_header *hdr = regdb;

	const struct fwdb_country *country;



	if (!regdb)

		return -ENODATA;



	if (IS_ERR(regdb))

		return PTR_ERR(regdb);