UBUNTU-CVE-2018-10901
Dashboard / Vulnerabilities / UBUNTU-CVE-2018-10901
Summary:
Details: A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.
References: https://ubuntu.com/security/CVE-2018-10901, https://git.kernel.org/linus/3444d7da1839b851eefedd372978d8a982316c36, https://www.cve.org/CVERecord?id=CVE-2018-10901
Affected packages
Package
Name: linux-azure-edge
Purl: pkg:deb/ubuntu/[email protected]~18.04.2?arch=source&distro=bionic
Affected ranges
Type: ECOSYSTEM
Events:
Introduced- 0
Fixed -None
Affected versions
4.18.0-1006.6~18.04.1
4.18.0-1007.7~18.04.1
4.18.0-1008.8~18.04.1
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
