CVE-2018-10853: canonical ubuntu_linux Execution with Unnecessary Privileges
Vulnerability summary
CVE-2018-10853 is a high (CVSS 7.8) Execution with Unnecessary Privileges vulnerability in canonical ubuntu_linux. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 40.6% of scored vulnerabilities.
Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 52 · Related 42Timeline
- 11-09-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 4 sources · 2 versions- CVE.orgCNA7.0HighCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated7.0HighCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.47%
Chance of exploitation in the next 30 days
Percentile
41%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.47% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-250Execution with Unnecessary PrivilegesThe product performs an operation at a privilege level that is higher than the minimum level required, which creates new weaknesses or amplifies the consequences of other weaknesses.
- CWE-269Improper Privilege ManagementThe product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu21 products
- linuxAll versions (No fix recorded) | < 4.4.0-133.159 | < 4.15.0-36.39
- linux-aws< 4.4.0-1027.30 | < 4.4.0-1065.75 | < 4.15.0-1023.23
- linux-azure< 4.15.0-1031.32~14.04.1 | < 4.15.0-1025.26~16.04.1 | < 4.15.0-1025.26
- linux-azure-6.11All versions (No fix recorded)
- linux-azure-fdeAll versions (No fix recorded)
Suse5 products
- kgraft-patch-SLE12_Update_37&distro=SUSE Linux Enterprise Server 12-LTSS< 2-2.1
- kgraft-patch-SLE12-SP1_Update_30&distro=SUSE Linux Enterprise Server 12 SP1-LTSS< 2-2.1
- kgraft-patch-SLE12-SP1_Update_30&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP1< 2-2.1
- kgraft-patch-SLE12-SP2_Update_24&distro=SUSE Linux Enterprise Server 12 SP2-LTSS< 2-2.1
- kgraft-patch-SLE12-SP2_Update_24&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP2< 2-2.1
Debian2 products
- linux< 4.16.16-1
- debian_linuxEOL8.0
Linux2 products
- kernel4.18
- linux_kernel< 4.18
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04
5 vendors · 31 products
References
24 links
lists.debian.org/debian-lts-announce/2018/07/msg00015.htmlMailing ListX Refsource MLISTThird Party Advisory- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853X Refsource CONFIRMIssue TrackingPatchThird Party Advisory
- lists.debian.org/debian-lts-announce/2018/07/msg00016.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.debian.org/debian-lts-announce/2018/07/msg00020.htmlMailing ListX Refsource MLISTThird Party Advisory
- www.openwall.com/lists/oss-security/2018/09/02/1X Refsource MISCMailing ListPatchThird Party Advisory