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
| Link | Resource |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3444d7da1839b851eefedd372978d8a982316c36 | Patch Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10901 | Issue Tracking Patch Third Party Advisory |
| http://www.securityfocus.com/bid/104905 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2018:2394 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:2393 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:2392 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:2391 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:2390 | Third Party Advisory |
| https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 | Third Party Advisory |
| https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html | Patch Third Party Advisory |
| https://www.oracle.com/security-alerts/cpujul2020.html | Third Party Advisory |
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Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Information
Published : 2018-07-26 10:29
Updated : 2023-02-24 10:43
NVD link : CVE-2018-10901
Mitre link : CVE-2018-10901
JSON object : View
CWE
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Products Affected
redhat
- enterprise_linux_desktop
- enterprise_linux_server_aus
- enterprise_linux_workstation
- enterprise_linux_server
linux
- linux_kernel