CVE-2018-10901 | 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.
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.
- 🔗 www.securityfocus.com/bid/104905
- 🔗 access.redhat.com/errata/RHSA-2018:2393
- 🔗 access.redhat.com/errata/RHSA-2018:2390
- 🔗 access.redhat.com/errata/RHSA-2018:2391
- 🔗 access.redhat.com/errata/RHSA-2018:2392
- 🔗 access.redhat.com/errata/RHSA-2018:2394
- 🔗 www.oracle.com/security-alerts/cpujul2020.html
- 🔗 www.oracle.com/technetwork/security-advisory/cpuapr2019-…
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CVE-2018-10901 | 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.
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