Ubuntu.comUB:CVE-2016-3157CVE-2016-3157
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.001 Low
EPSS
Percentile
27.1%
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.
Bugs
Notes
| Author | Note |
|---|---|
| jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 12.04 | noarch | linux | < 3.2.0-104.145 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux | < 3.13.0-86.130 | UNKNOWN |
| ubuntu | 15.10 | noarch | linux | < 4.2.0-36.41 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < 4.4.0-22.39 | UNKNOWN |
| ubuntu | 12.04 | noarch | linux-armadaxp | < 3.2.0-1667.92 | UNKNOWN |
| ubuntu | 12.04 | noarch | linux-lts-trusty | < 3.13.0-86.130~precise1 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-utopic | < 3.16.0-71.91~14.04.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-vivid | < 3.19.0-59.65~14.04.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-wily | < 4.2.0-36.41~14.04.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-xenial | < 4.4.0-22.39~14.04.1 | UNKNOWN |
References
xenbits.xen.org/xsa/advisory-171.html
xenbits.xen.org/xsa/xsa171.patch
launchpad.net/bugs/cve/CVE-2016-3157
nvd.nist.gov/vuln/detail/CVE-2016-3157
security-tracker.debian.org/tracker/CVE-2016-3157
ubuntu.com/security/notices/USN-2965-1
ubuntu.com/security/notices/USN-2965-2
ubuntu.com/security/notices/USN-2965-3
ubuntu.com/security/notices/USN-2965-4
ubuntu.com/security/notices/USN-2968-1
ubuntu.com/security/notices/USN-2968-2
ubuntu.com/security/notices/USN-2969-1
ubuntu.com/security/notices/USN-2970-1
ubuntu.com/security/notices/USN-2971-1
ubuntu.com/security/notices/USN-2971-2
ubuntu.com/security/notices/USN-2971-3
ubuntu.com/security/notices/USN-2996-1
ubuntu.com/security/notices/USN-2997-1
www.cve.org/CVERecord?id=CVE-2016-3157
Related
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.001 Low
EPSS
Percentile
27.1%