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