Impact: Important Public Date: 2019-05-14 CWE: CWE-203->CWE-385 Bugzilla: 1646784: CVE-2018-12130 hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS) A flaw was found in the implementation of the "fill buffer", a mechanism used by modern CPUs when a cache-miss is made on L1 CPU cache. If an attacker can generate a load operation that would create a page fault, the execution will continue speculatively with incorrect data from the fill buffer while the data is fetched from higher level caches. This response time can be measured to infer data in the fill buffer.
Find out more about CVE-2018-12130 from the MITRE CVE dictionary dictionary and NIST NVD.
Red Hat Product Security is aware of this issue. Updates will be released as they become available. For additional information, please refer to the Red Hat Knowledgebase article: https://access.redhat.com/security/vulnerabilities/mds
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 6.2 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | None |
| Availability Impact | None |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 8 (kernel) | RHSA-2019:1167 | 2019-05-14 |
| Red Hat Enterprise Linux 8 (kernel-rt) | RHSA-2019:1174 | 2019-05-14 |
| Red Hat Enterprise Linux Extended Update Support 7.5 (libvirt) | RHSA-2019:1182 | 2019-05-14 |
| Red Hat Enterprise Linux 8 (kernel) | RHSA-2019:1167 | 2019-05-14 |
| Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts (qemu-kvm-rhev) | RHSA-2019:1179 | 2019-05-14 |
| Red Hat Enterprise Linux 7 (qemu-kvm) | RHSA-2019:1178 | 2019-05-14 |
| Red Hat Enterprise Linux Extended Update Support 7.4 (kernel) | RHSA-2019:1170 | 2019-05-14 |
| Red Hat Enterprise Linux 7 (libvirt) | RHSA-2019:1177 | 2019-05-14 |
| Red Hat Enterprise Linux 8 (kernel-rt) | RHSA-2019:1174 | 2019-05-14 |
| Red Hat Enterprise Linux Extended Update Support 7.4 (libvirt) | RHSA-2019:1184 | 2019-05-14 |
| Red Hat Enterprise Linux Extended Update Support 7.4 (qemu-kvm) | RHSA-2019:1185 | 2019-05-14 |
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) | RHSA-2019:1176 | 2019-05-14 |
| Red Hat Enterprise Linux 7 (kernel) | RHSA-2019:1168 | 2019-05-14 |
| Red Hat Enterprise Linux 6 (libvirt) | RHSA-2019:1180 | 2019-05-14 |
| Red Hat Enterprise Linux 6 (qemu-kvm) | RHSA-2019:1181 | 2019-05-14 |
| Red Hat Enterprise Linux Extended Update Support 7.5 (kernel) | RHSA-2019:1155 | 2019-05-14 |
| Red Hat Enterprise Linux 8 (virt:rhel) | RHSA-2019:1175 | 2019-05-14 |
| Red Hat Enterprise Linux Extended Update Support 7.5 (qemu-kvm) | RHSA-2019:1183 | 2019-05-14 |
| Red Hat Enterprise Linux 6 (kernel) | RHSA-2019:1169 | 2019-05-14 |
| Platform | Package | State |
|---|---|---|
| Red Hat Virtualization 4 | vdsm | Affected |
| Red Hat Virtualization 4 | ovirt-guest-agent | Affected |
| Red Hat Virtualization 4 | rhvm-appliance | Affected |
| Red Hat Virtualization 4 | rhvm-setup-plugins | Affected |
| Red Hat Virtualization 4 | redhat-virtualization-host | Affected |
| Red Hat OpenStack Platform 9.0 | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 14.0 (Rocky) | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 13.0 (Queens) | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 10 | qemu-kvm-rhev | Affected |
| Red Hat Enterprise MRG 2 | kernel-rt | Affected |
| Red Hat Enterprise Linux 8 Advanced Virtualization | virt:8.0.0/libvirt | Affected |
| Red Hat Enterprise Linux 8 Advanced Virtualization | virt:8.0.0/qemu-kvm | Affected |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected |
| Red Hat Enterprise Linux 5 | kernel | Will not fix |
Vulmon