Description: nl80211: validate beacon head
References:
 https://marc.info/?l=linux-wireless&m=156901391225058&w=2
Notes:
Bugs:
upstream: released (5.4-rc2) [f88eb7c0d002a67ef31aeb7850b42ff69abc46dc]
4.19-upstream-stable: released (4.19.79) [1bd17a737c9e7e91483d9a603528b0e6d4c772f8]
4.9-upstream-stable: released (4.9.197) [a873afd7d888f7349bfabc9191afeb20eb1d3a45]
3.16-upstream-stable: released (3.16.79) [9eec2aca63328997846b52e91e88dab94ccd1414]
sid: released (5.3.7-1)
4.19-buster-security: released (4.19.87-1)
4.9-stretch-security: released (4.9.210-1)
3.16-jessie-security: released (3.16.81-1)