CVE-2018-10901
- State
- Published
- Severity
- 7.8 High
- Published
- Jul 26, 2018
- Updated
- Aug 5, 2024
- Reserved
- May 9, 2018
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 7.8 High | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
kernel:[UNKNOWN] |
|
References
- 104905vdb-entry
- RHSA-2018:2393vendor-advisory
- RHSA-2018:2390vendor-advisory
- RHSA-2018:2391vendor-advisory
- RHSA-2018:2392vendor-advisory
- RHSA-2018:2394vendor-advisory
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3444d7da1839b851eefedd372978d8a982316c36
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10901
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