CVE-2016-3157
High
Description
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
SeverityHigh
CVSS7.8
Exploit probability—
ProductXen
PublishedApr 12, 2016
First seenApr 12, 2016
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| xen xen | 4.0.0 | — |
| canonical ubuntu_linux | 12.04 | — |
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