A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade kernelUpgrade kernel-rt | Mar 13, 2018 | Jul 8, 2017 |
| Debian | — | Upgrade linux | Sep 25, 2017 | Jul 8, 2017 |
| Huawei Euleros 2_0_sp3 | — | Upgrade kernel-debuginfoUpgrade kernel-headersUpgrade kernelUpgrade kernel-develUpgrade perfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-libsUpgrade python-perfUpgrade kernel-tools | Nov 19, 2019 | Jul 30, 2018 |
| Oracle_linux | — | Upgrade kernel-uekUpgrade kernel | Mar 9, 2018 | Jun 22, 2017 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rt | Mar 7, 2018 | Jul 8, 2017 |
| Suse | — | Upgrade gfs2-kmp-defaultUpgrade cluster-md-kmp-defaultUpgrade dlm-kmp-defaultUpgrade kernel-defaultUpgrade kernel-obs-buildUpgrade kernel-ec2-develUpgrade ocfs2-kmp-defaultUpgrade kernel-ec2-extraUpgrade kernel-docsUpgrade cluster-network-kmp-defaultUpgrade kernel-ec2 | Jul 8, 2017 | Jul 8, 2017 |
| Ubuntu | — | Upgrade linux-image-3.13.0-157-lowlatencyUpgrade linux-image-3.13.0-157-powerpc-e500Upgrade linux-image-3.13.0-157-generic-lpaeUpgrade linux-image-3.13.0-157-powerpc-smpUpgrade linux-image-powerpc-smp-lts-xenialUpgrade linux-image-4.4.0-1086-raspi2Upgrade linux-image-3.13.0-157-powerpc-e500mcUpgrade linux-image-4.4.0-119-powerpc-e500mcUpgrade linux-image-4.4.0-1088-snapdragonUpgrade linux-image-4.4.0-119-powerpc-smpUpgrade linux-image-lowlatencyUpgrade linux-image-powerpc64-emb-lts-xenialUpgrade linux-image-powerpc64-smp-lts-xenialUpgrade linux-image-4.4.0-1054-awsUpgrade linux-image-powerpc-smpUpgrade linux-image-genericUpgrade linux-image-4.4.0-1020-kvmUpgrade linux-image-4.4.0-1016-awsUpgrade linux-image-generic-lpae-lts-xenialUpgrade linux-image-4.4.0-119-powerpc64-embUpgrade linux-image-powerpc64-smpUpgrade linux-image-powerpc64-embUpgrade linux-image-4.4.0-119-lowlatencyUpgrade linux-image-4.4.0-119-powerpc64-smpUpgrade linux-image-snapdragonUpgrade linux-image-4.4.0-119-genericUpgrade linux-image-powerpc-e500mc-lts-xenialUpgrade linux-image-generic-lpaeUpgrade linux-image-3.13.0-157-powerpc64-embUpgrade linux-image-3.13.0-157-genericUpgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-raspi2Upgrade linux-image-awsUpgrade linux-image-3.13.0-157-powerpc64-smpUpgrade linux-image-4.4.0-119-generic-lpaeUpgrade linux-image-powerpc-e500Upgrade linux-image-kvmUpgrade linux-image-generic-lts-xenialUpgrade linux-image-powerpc-e500mc | Apr 25, 2018 | Jul 8, 2017 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jul 30, 2018 |
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