High severity7.8NVD Advisory· Published Jul 26, 2018· Updated Jun 17, 2026
CVE-2018-10901
CVE-2018-10901
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.
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Affected products
2Patches
Vulnerability mechanics
References
11- bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatchThird Party Advisory
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdPatchVendor Advisory
- www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlnvdPatchThird Party Advisory
- www.securityfocus.com/bid/104905nvdThird Party AdvisoryVDB Entry
- access.redhat.com/errata/RHSA-2018:2390nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2018:2391nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2018:2392nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2018:2393nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2018:2394nvdThird Party Advisory
- help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0nvdThird Party Advisory
- www.oracle.com/security-alerts/cpujul2020.htmlnvdThird Party Advisory
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