CVE-2016-3157
Summary
| CVE | CVE-2016-3157 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-04-12 16:59:02 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.0 7.8 HIGH from [email protected]
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-264 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 7.8 | HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
CVSS v3.0 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
CompleteIntegrity
CompleteAvailability
CompleteAV:L/AC:L/Au:N/C:C/I:C/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Canonical | Ubuntu Linux | 12.04 | All | All | All |
| Operating System | Xen | Xen | 4.0.0 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| USN-2968-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| USN-2971-2: Linux kernel (Wily HWE) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| USN-2996-1: Linux kernel vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| USN-2968-1: Linux kernel vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| USN-2971-1: Linux kernel vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| Debian -- Security Information -- DSA-3607-1 linux | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| USN-2997-1: Linux kernel (OMAP4) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| USN-2969-1: Linux kernel (Utopic HWE) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| Linux Kernel Xen PV Guest CVE-2016-3157 Local Privilege Escalation Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| XSA-171 - Xen Security Advisories | af854a3a-2127-422b-91ae-364da2661108 | xenbits.xen.org | Patch, Vendor Advisory |
| USN-2970-1: Linux kernel (Vivid HWE) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| USN-2971-3: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| Oracle Linux Bulletin - April 2016 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | |
| Xen I/O Port Access Missing PHYSDEVOP_set_iopl Hypercall Lets Local Users on a Guest System Gain Elevated Privileges on the Guest System - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.