CVE-2018-10853
High
Description
A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Linux Kernel
PublishedSep 11, 2018
First seenSep 11, 2018
Weakness typeCWE-250CWE-250
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.18 | 4.18 |
| canonical ubuntu_linux | 16.04, 18.04 | — |
| debian debian_linux | 8.0 | — |
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