Description: hdlc_ppp: add range checks in ppp_cp_parse_cr()
References:
Notes:
 carnil> Fixed as well in 5.8.12
Bugs:
upstream: released (5.9-rc7) [66d42ed8b25b64eb63111a2b8582c5afc8bf1105]
4.19-upstream-stable: released (4.19.148) [45676c0bc28eff8f46455b28e2db80a77676488b]
4.9-upstream-stable: released (4.9.238) [585e29541c29349420d5926026a74456e233a2b3]
sid: released (5.8.14-1)
4.19-buster-security: released (4.19.152-1)
4.9-stretch-security: released (4.9.240-1)