Description: vgacon_scrolldelta out-of-bounds read
References:
 https://www.openwall.com/lists/oss-security/2020/09/16/1
Notes:
Bugs:
upstream: released (5.9-rc6) [973c096f6a85e5b5f2a295126ba6928d9a6afd45]
5.10-upstream-stable: N/A "Fixed before branching point"
4.19-upstream-stable: released (4.19.146) [f5fa64c8daf7b97280865c73903edc0a3eea819e]
4.9-upstream-stable: released (4.9.237) [5f76b4c6ac297ce836abe17f495123f45bfc4fb3]
sid: released (5.8.10-1)
4.19-buster-security: released (4.19.146-1)
4.9-stretch-security: released (4.9.240-1)