Privilege escalation in Linux Kernel
CVE-2018-10853
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.
EPSS: 0.005 (38.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Kernel — versions 4.18
- Linux Linux_kernel
- Canonical Ubuntu_linux — versions 16.04, 18.04
- Debian Debian_linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- secalert@redhat.com (Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (vendor-advisory, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2018-10853?
- CVE-2018-10853 is a high-severity vulnerability in Linux Kernel, classified under CWE-250. CVSS score: 7.0/10. Published 2018-09-11.
- How severe is CVE-2018-10853?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2018-10853 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.