Description:  brcmfmac: add length check in brcmf_cfg80211_escan_handler()
References:
Notes:
 bwh> Upstream commit is marked for 4.0 onward, but I think the bug was
 bwh> introduced in 3.7 by commit e756af5b30b0 "brcmfmac: add e-scan support."
Bugs:
upstream: released (4.14-rc4) [17df6453d4be17910456e99c5a85025aa1b7a246]
4.9-upstream-stable: released (4.9.55) [4d3132d97aa753104ee35722352a895750a0fca5]
3.16-upstream-stable: released (3.16.50) [7df83adfc5d38bf960ef7ff0e4cb1c2c92715f63]
3.2-upstream-stable: N/A "Vulnerable code not present"
sid: released (4.13.4-2) [bugfix/all/brcmfmac-add-length-check-in-brcmf_cfg80211_escan_ha.patch]
4.9-stretch-security: released (4.9.65-1)
3.16-jessie-security: released (3.16.51-1)
3.2-wheezy-security: N/A "Vulnerable code not present"