CVE-2018-10901
High
Description
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedJul 26, 2018
First seenJul 26, 2018
Weakness typeCWE-665CWE-665
How to fix
Update
- linux linux_kernel2.6.36 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 2.6.36 | 2.6.36 |
| redhat enterprise_linux_desktop | 6.0 | — |
| redhat enterprise_linux_server | 6.0 | — |
| redhat enterprise_linux_server_aus | 6.4, 6.5, 6.6 | — |
| redhat enterprise_linux_workstation | 6.0 | — |
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