HIGH
An issue where a provided address with access_ok() is not checked was discovered in i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c in the Linux kernel through 4.19.13. A local attacker can craft a malicious IOCTL function call to overwrite arbitrary kernel memory, resulting in a Denial of Service or privilege escalation.
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.html
http://www.openwall.com/lists/oss-security/2019/01/23/6
http://www.securityfocus.com/bid/106748
https://access.redhat.com/security/cve/cve-2018-20669
https://security.netapp.com/advisory/ntap-20190404-0002/
Source: MITRE
Published: 2019-03-21
Updated: 2020-09-15
Type: CWE-20
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH