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-tools-develUpgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade perfUpgrade kernel-livepatch-4.14.348-265.565Upgrade bpftoolUpgrade kernelUpgrade kernel-develUpgrade kernel-headersUpgrade bpftool-debuginfoUpgrade python-perfUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-debuginfoUpgrade kernel-tools | Aug 2, 2024 | Mar 15, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Mar 15, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade python3-perfUpgrade kernel | Jul 16, 2024 | Mar 15, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernelUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade python3-perf | Jul 17, 2024 | Mar 15, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 15, 2024 |
| Suse | — | Upgrade kernel-source-azureUpgrade kernel-preemptUpgrade kernel-64kb-develUpgrade kernel-64kbUpgrade kernel-syms-azureUpgrade kernel-symsUpgrade kernel-default-extraUpgrade kernel-zfcpdumpUpgrade kernel-azure-develUpgrade kernel-devel-azureUpgrade kernel-default-manUpgrade kernel-default-develUpgrade kernel-sourceUpgrade kernel-macrosUpgrade kernel-default-baseUpgrade kernel-azureUpgrade kernel-azure-baseUpgrade kernel-obs-buildUpgrade kernel-develUpgrade kernel-preempt-develUpgrade kernel-defaultUpgrade kernel-docsUpgrade reiserfs-kmp-default | Aug 9, 2024 | Mar 15, 2024 |
| Ubuntu | — | Upgrade linux-azure-fipsUpgrade linux-gcp-5.4Upgrade linux-oracle-5.4Upgrade linuxUpgrade linux-aws-5.4Upgrade linux-gcpUpgrade linux-awsUpgrade linux-oracleUpgrade linux-azure-fde-5.15Upgrade linux-bluefieldUpgrade linux-kvmUpgrade linux-azure-5.4Upgrade linux-raspiUpgrade linux-raspi-5.4Upgrade linux-fipsUpgrade linux-gcp-fipsUpgrade linux-hwe-5.4Upgrade linux-gkeopUpgrade linux-aws-fipsUpgrade linux-azure | Nov 19, 2024 | Mar 15, 2024 |
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