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Status published
High
CVE-2018-10853
A flaw was found in the way Linux kernel KVM...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853
- https://usn.ubuntu.com/3777-1/
- https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74
- https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html
- https://usn.ubuntu.com/3777-2/
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6
- https://www.openwall.com/lists/oss-security/2018/09/02/1
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
- https://access.redhat.com/errata/RHSA-2019:2043
- https://access.redhat.com/errata/RHSA-2019:2029
- https://access.redhat.com/errata/RHSA-2020:0036
- https://access.redhat.com/errata/RHSA-2020:0103
- https://access.redhat.com/errata/RHSA-2020:0179
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Affected Vendor
Linux
View all reports →Affected Software
kernel
Vulnerable Versions:
4.18
Timeline
Official Publish:
September 11th, 2018
Last Modified:
August 5th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H