Description: Missing access_ok() checks in IOCTL function (gpu/drm/i915 Driver)
References:
 https://www.openwall.com/lists/oss-security/2019/01/23/6
Notes:
 bwh> I think this is not a real vulnerability, as explained in
 bwh> https://www.openwall.com/lists/oss-security/2019/02/07/1
Bugs:
upstream: released (5.0-rc1) [594cc251fdd0d231d342d88b2fdff4bc42fb0690]
4.19-upstream-stable: released (4.19.129) [216284c4a126b28469eb0bf4994c669e251f47ba]
4.9-upstream-stable: N/A "Not a vulnerability"
3.16-upstream-stable: N/A "Not a vulnerability"
sid: released (5.2.6-1)
4.19-buster-security: released (4.19.131-1)
4.9-stretch-security: N/A "Not a vulnerability"
3.16-jessie-security: N/A "Not a vulnerability"