In the Linux kernel, the following vulnerability has been resolved:
x86/kvm: Teardown PV features on boot CPU as well
Various PV features (Async PF, PV EOI, steal time) work through memory shared with hypervisor and when we restore from hibernation we must properly teardown all these features to make sure hypervisor doesn't write to stale locations after we jump to the previously hibernated kernel (which can try to place anything there). For secondary CPUs the job is already done by kvm_cpu_down_prepare(), register syscore ops to do the same for boot CPU.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/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 |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-develUpgrade kernelUpgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-livepatch-4.14.348-265.565Upgrade kernel-tools-develUpgrade bpftoolUpgrade perfUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-headersUpgrade bpftool-debuginfoUpgrade python-perf | Aug 2, 2024 | Mar 15, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Mar 15, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade python3-perfUpgrade kernel | Jul 16, 2024 | Mar 15, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-libsUpgrade python3-perf | Jul 17, 2024 | Mar 15, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 15, 2024 |
| Suse | — | Upgrade kernel-syms-azureUpgrade kernel-symsUpgrade kernel-64kbUpgrade kernel-macrosUpgrade kernel-preemptUpgrade kernel-64kb-develUpgrade kernel-zfcpdumpUpgrade kernel-default-develUpgrade kernel-default-manUpgrade kernel-devel-azureUpgrade kernel-default-extraUpgrade kernel-sourceUpgrade kernel-source-azureUpgrade kernel-azure-develUpgrade kernel-obs-buildUpgrade kernel-preempt-develUpgrade kernel-azureUpgrade kernel-azure-baseUpgrade kernel-docsUpgrade reiserfs-kmp-defaultUpgrade kernel-defaultUpgrade kernel-default-baseUpgrade kernel-devel | Aug 9, 2024 | Mar 15, 2024 |
| Ubuntu | — | Upgrade linux-gcp-fipsUpgrade linux-azure-5.4Upgrade linux-hwe-5.4Upgrade linux-aws-fipsUpgrade linux-oracleUpgrade linux-bluefieldUpgrade linux-azure-fde-5.15Upgrade linux-raspi-5.4Upgrade linux-kvmUpgrade linux-gkeopUpgrade linux-fipsUpgrade linux-raspiUpgrade linux-azureUpgrade linux-awsUpgrade linux-aws-5.4Upgrade linuxUpgrade linux-gcpUpgrade linux-azure-fipsUpgrade linux-oracle-5.4Upgrade linux-gcp-5.4 | Nov 19, 2024 | Mar 15, 2024 |
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