kernel KVM
At a glance
- Source
- NVD
- EPSS
- EPSS 0.74 % · percentile 55 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
Description
kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel's KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.
Weaknesses (CWE)
- CWE-250 — Execution with Unnecessary Privileges
References
- https://access.redhat.com/errata/RHSA-2018:1347
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1087
- http://www.securitytracker.com/id/1040862
- https://access.redhat.com/errata/RHSA-2018:1348
- https://www.debian.org/security/2018/dsa-4196
- https://access.redhat.com/errata/RHSA-2018:1355
- https://access.redhat.com/errata/RHSA-2018:1345
- https://access.redhat.com/security/vulnerabilities/pop_ss
- https://access.redhat.com/errata/RHSA-2018:1318
- https://access.redhat.com/errata/RHSA-2018:1524
- http://www.openwall.com/lists/oss-security/2018/05/08/5
- http://www.securityfocus.com/bid/104127
- https://usn.ubuntu.com/3641-2/
- https://usn.ubuntu.com/3641-1/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 8.0 | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat |
| CVSS 3.0 | HIGH 8.0 | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.0 | HIGH 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2018-11737
- GCVE · GCVE-0-2018-1087
CERT-FR advisories
- CERTFR-2018-AVI-584 — Multiples vulnérabilités dans IBM QRadar SIEM · cert.ssi.gouv.fr
- CERTFR-2018-AVI-505 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2018-AVI-275 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2018-AVI-268 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2018-AVI-232 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2018-AVI-228 — Multiples vulnérabilités dans le noyau Linux de RedHat · cert.ssi.gouv.fr
- CERTFR-2018-AVI-226 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2018-AVI-224 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:4.16:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.16:rc7:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.17:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.17:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.17:rc3:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_virtualization:4.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| kernel · KVM | affected kernel 4.16 ; affected kernel 4.16-rc7 ; affected kernel 4.17-rc1 ; affected kernel 4.17-rc2 ; affected kernel 4.17-rc3 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |