Privilege escalation in Linux kernel - CVE-2018-20669
Published: February 19, 2019
Vulnerability identifier: #VU17761
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2018-20669
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local attacker to escalate privileges on the system.
The vulnerability exists in i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c due to a provided address with access_ok() is not checked before accessing userspace data in certain situations. A local attacker can gain elevated privileges.
How to mitigate CVE-2018-20669
Install updates from vendor's website.