8.4 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
4.6 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
54.9%
The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a “MOV SS, NULL selector” instruction, which allows guest OS users to cause a denial of service (guest OS crash) or gain guest OS privileges via a crafted application.
CPE | Name | Operator | Version |
---|---|---|---|
linux:linux_kernel | linux linux kernel | le | 4.9.4 |
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=33ab91103b3415e12457e3104f0e4517ce12d0f3
www.debian.org/security/2017/dsa-3791
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5
www.openwall.com/lists/oss-security/2017/01/19/2
www.securityfocus.com/bid/95673
access.redhat.com/errata/RHSA-2017:1615
access.redhat.com/errata/RHSA-2017:1616
bugzilla.redhat.com/show_bug.cgi?id=1414735
github.com/torvalds/linux/commit/33ab91103b3415e12457e3104f0e4517ce12d0f3
usn.ubuntu.com/3754-1/
More
8.4 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
4.6 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
54.9%