In the Linux kernel, the following vulnerability has been resolved:
Drivers: hv: vmbus: Fix potential crash on module unload
The vmbus driver relies on the panic notifier infrastructure to perform some operations when a panic event is detected. Since vmbus can be built as module, it is required that the driver handles both registering and unregistering such panic notifier callback.
After commit 74347a99e73a ("x86/Hyper-V: Unload vmbus channel in hv panic callback") though, the panic notifier registration is done unconditionally in the module initialization routine whereas the unregistering procedure is conditionally guarded and executes only if HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE capability is set.
This patch fixes that by unconditionally unregistering the panic notifier in the module's exit routine as well.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perfUpgrade kernel-headersUpgrade kernel-toolsUpgrade python-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade perfUpgrade bpftool-debuginfoUpgrade kernel-tools-develUpgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-5.10.112-108.499Upgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade kernel | Mar 14, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade bpftoolUpgrade python3-perf | Jul 1, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-aws-5.4Upgrade linux-oracleUpgrade linux-realtimeUpgrade linux-gkeUpgrade linux-lowlatencyUpgrade linux-intel-iotg-5.15Upgrade linux-azure-5.4Upgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-raspi-5.4Upgrade linux-raspiUpgrade linux-oracle-5.4Upgrade linux-iotUpgrade linux-kvmUpgrade linux-bluefieldUpgrade linux-fipsUpgrade linux-awsUpgrade linux-azure-5.15Upgrade linuxUpgrade linux-ibmUpgrade linux-hwe-5.4Upgrade linux-gcp-fipsUpgrade linux-ibm-5.4Upgrade linux-aws-fipsUpgrade linux-azure-fipsUpgrade linux-gcp-5.4Upgrade linux-gcpUpgrade linux-intel-iotg | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub