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 | — | centos-upgrade-kernelcentos-upgrade-kernel-rt | Mar 13, 2018 | Jul 8, 2017 |
| Debian | debian-upgrade-linux | Sep 25, 2017 | Jul 8, 2017 | |
| Huawei Euleros 2_0_sp3 | huawei-euleros-2_0_sp3-upgrade-kernelhuawei-euleros-2_0_sp3-upgrade-kernel-debuginfohuawei-euleros-2_0_sp3-upgrade-kernel-debuginfo-common-x86_64huawei-euleros-2_0_sp3-upgrade-kernel-develhuawei-euleros-2_0_sp3-upgrade-kernel-headershuawei-euleros-2_0_sp3-upgrade-kernel-toolshuawei-euleros-2_0_sp3-upgrade-kernel-tools-libshuawei-euleros-2_0_sp3-upgrade-perfhuawei-euleros-2_0_sp3-upgrade-python-perf | Nov 19, 2019 | Jul 30, 2018 | |
| Oracle_linux | — | oracle-linux-upgrade-kerneloracle-linux-upgrade-kernel-uek | Mar 9, 2018 | Jun 22, 2017 |
| Redhat_linux | — | redhat-upgrade-kernelredhat-upgrade-kernel-rt | Mar 7, 2018 | Jul 8, 2017 |
| Suse | — | suse-upgrade-cluster-md-kmp-defaultsuse-upgrade-cluster-network-kmp-defaultsuse-upgrade-dlm-kmp-defaultsuse-upgrade-gfs2-kmp-defaultsuse-upgrade-kernel-defaultsuse-upgrade-kernel-docssuse-upgrade-kernel-ec2suse-upgrade-kernel-ec2-develsuse-upgrade-kernel-ec2-extrasuse-upgrade-kernel-obs-buildsuse-upgrade-ocfs2-kmp-default | Jul 8, 2017 | Jul 8, 2017 |
| Ubuntu | ubuntu-upgrade-linux-image-3-13-0-157-genericubuntu-upgrade-linux-image-3-13-0-157-generic-lpaeubuntu-upgrade-linux-image-3-13-0-157-lowlatencyubuntu-upgrade-linux-image-3-13-0-157-powerpc-e500ubuntu-upgrade-linux-image-3-13-0-157-powerpc-e500mcubuntu-upgrade-linux-image-3-13-0-157-powerpc-smpubuntu-upgrade-linux-image-3-13-0-157-powerpc64-embubuntu-upgrade-linux-image-3-13-0-157-powerpc64-smpubuntu-upgrade-linux-image-4-4-0-1016-awsubuntu-upgrade-linux-image-4-4-0-1020-kvmubuntu-upgrade-linux-image-4-4-0-1054-awsubuntu-upgrade-linux-image-4-4-0-1086-raspi2ubuntu-upgrade-linux-image-4-4-0-1088-snapdragonubuntu-upgrade-linux-image-4-4-0-119-genericubuntu-upgrade-linux-image-4-4-0-119-generic-lpaeubuntu-upgrade-linux-image-4-4-0-119-lowlatencyubuntu-upgrade-linux-image-4-4-0-119-powerpc-e500mcubuntu-upgrade-linux-image-4-4-0-119-powerpc-smpubuntu-upgrade-linux-image-4-4-0-119-powerpc64-embubuntu-upgrade-linux-image-4-4-0-119-powerpc64-smpubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-lts-xenialubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-powerpc-e500ubuntu-upgrade-linux-image-powerpc-e500mcubuntu-upgrade-linux-image-powerpc-e500mc-lts-xenialubuntu-upgrade-linux-image-powerpc-smpubuntu-upgrade-linux-image-powerpc-smp-lts-xenialubuntu-upgrade-linux-image-powerpc64-embubuntu-upgrade-linux-image-powerpc64-emb-lts-xenialubuntu-upgrade-linux-image-powerpc64-smpubuntu-upgrade-linux-image-powerpc64-smp-lts-xenialubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragon | Apr 25, 2018 | Jul 8, 2017 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Jul 30, 2018 |
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