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In the Linux kernel, the following vulnerability has been resolved:
KVM: Stop looking for coalesced MMIO zones if the bus is destroyed
Abort the walk of coalesced MMIO zones if kvm_io_bus_unregister_dev() fails to allocate memory for the new instance of the bus. If it can't instantiate a new bus, unregister_dev() destroys all devices _except_ the target device. But, it doesn't tell the caller that it obliterated the bus and invoked the destructor for all devices that were on the bus. In the coalesced MMIO case, this can result in a deleted list entry dereference due to attempting to continue iterating on coalesced_zones after future entries (in the walk) have been deleted.
Opportunistically add curly braces to the for-loop, which encompasses many lines but sneaks by without braces due to the guts being a single if statement.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade perfUpgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernelUpgrade kernel-headersUpgrade kernel-develUpgrade python-perf-debuginfoUpgrade kernel-tools-develUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade python-perfUpgrade bpftoolUpgrade kernel-tools | Aug 2, 2024 | Feb 29, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Feb 29, 2024 |
| Huawei Euleros 2_0_sp8 | — | Upgrade perfUpgrade kernel-toolsUpgrade bpftoolUpgrade python-perfUpgrade python3-perfUpgrade kernelUpgrade kernel-develUpgrade kernel-headersUpgrade kernel-tools-libs | Jul 23, 2024 | Feb 29, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 29, 2024 |
| Suse | — | Upgrade kernel-64kb-develUpgrade kernel-default-extraUpgrade kernel-defaultUpgrade kernel-docsUpgrade kernel-symsUpgrade kernel-default-baseUpgrade kernel-macrosUpgrade kernel-azure-develUpgrade kernel-preemptUpgrade kernel-default-manUpgrade kernel-develUpgrade kernel-azureUpgrade kernel-default-develUpgrade kernel-syms-azureUpgrade kernel-preempt-develUpgrade kernel-obs-buildUpgrade kernel-64kbUpgrade kernel-sourceUpgrade kernel-azure-baseUpgrade kernel-source-azureUpgrade kernel-devel-azureUpgrade kernel-zfcpdumpUpgrade reiserfs-kmp-default | Aug 9, 2024 | Feb 29, 2024 |
| Ubuntu | — | Upgrade linuxUpgrade linux-raspiUpgrade linux-bluefieldUpgrade linux-aws-5.4Upgrade linux-gcpUpgrade linux-oracle-5.4Upgrade linux-fipsUpgrade linux-hwe-5.4Upgrade linux-azureUpgrade linux-awsUpgrade linux-kvmUpgrade linux-azure-5.4Upgrade linux-oracleUpgrade linux-gkeopUpgrade linux-gcp-5.4Upgrade linux-raspi-5.4 | Nov 19, 2024 | Feb 29, 2024 |
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