RedhatCVELIST:CVE-2018-10853CVE-2018-10853
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.1%
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.
CNA Affected
[
{
"product": "kernel",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.18"
}
]
}
]References
lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
access.redhat.com/errata/RHSA-2019:2029
access.redhat.com/errata/RHSA-2019:2043
access.redhat.com/errata/RHSA-2020:0036
access.redhat.com/errata/RHSA-2020:0103
access.redhat.com/errata/RHSA-2020:0179
bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6
lists.debian.org/debian-lts-announce/2018/07/msg00015.html
lists.debian.org/debian-lts-announce/2018/07/msg00016.html
lists.debian.org/debian-lts-announce/2018/07/msg00020.html
usn.ubuntu.com/3777-1/
usn.ubuntu.com/3777-2/
www.openwall.com/lists/oss-security/2018/09/02/1
Related
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.1%