In the Linux kernel, the following vulnerability has been resolved:
NTB: epf: Avoid calling pci_irq_vector() from hardirq context
ntb_epf_vec_isr() calls pci_irq_vector() in hardirq context to derive the vector number. pci_irq_vector() calls msi_get_virq() that takes a mutex and can therefore trigger "scheduling while atomic" splats:
BUG: scheduling while atomic: kworker/u33:0/55/0x00010001 ... Call trace: ... schedule+0x38/0x110 schedule_preempt_disabled+0x28/0x50 __mutex_lock.constprop.0+0x848/0x908 __mutex_lock_slowpath+0x18/0x30 mutex_lock+0x4c/0x60 msi_domain_get_virq+0xe8/0x138 pci_irq_vector+0x2c/0x60 ntb_epf_vec_isr+0x28/0x120 [ntb_hw_epf] __handle_irq_event_percpu+0x70/0x3a8 handle_irq_event+0x48/0x100 handle_edge_irq+0x100/0x1c8 ...
Cache the Linux IRQ number for vector 0 when vectors are allocated and use it as a base in the ISR. Running the ISR in a threaded IRQ handler would also avoid the problem, but that would be unnecessary here.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.12Upgrade linux-6.1Upgrade linux | Jul 28, 2026 | Jul 28, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1036-nvidia-tegraUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-azure-fips-5.15Upgrade linux-image-gkeUpgrade linux-image-awsUpgrade linux-image-aws-5.15Upgrade linux-image-aws-7.0Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-ibm-5.15Upgrade linux-image-virtual-5.15Upgrade linux-image-gcp-7.0Upgrade linux-image-5.15.0-198-genericUpgrade linux-image-aws-64k-5.15Upgrade linux-image-aws-64k-7.0Upgrade linux-image-5.15.0-1118-gcpUpgrade linux-image-5.15.0-198-generic-lpaeUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-5.15.0-1118-gcp-fipsUpgrade linux-image-gke-7.0Upgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-aws-fipsUpgrade linux-image-5.15.0-1111-ibmUpgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-7.0.0-1013-oemUpgrade linux-image-azure-5.15Upgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-5.15.0-1080-xilinx-zynqmpUpgrade linux-image-7.0.0-1014-azureUpgrade linux-image-oem-20.04Upgrade linux-image-aws-64kUpgrade linux-image-5.15.0-1112-nvidia-lowlatencyUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-virtualUpgrade linux-image-5.15.0-1112-nvidiaUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-5.15.0-1109-kvmUpgrade linux-image-generic-5.15Upgrade linux-image-gkeop-5.15Upgrade linux-image-intel-iotgUpgrade linux-image-azure-cvmUpgrade linux-image-azure-fde-5.15Upgrade linux-image-kvmUpgrade linux-image-fips-5.15Upgrade linux-image-gcpUpgrade linux-image-5.15.0-1117-aws-64kUpgrade linux-image-gcp-5.15Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-generic-7.0Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-realtime-64kUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-5.15.0-195-lowlatencyUpgrade linux-image-azure-7.0Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-5.15.0-1100-gkeopUpgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-5.15.0-1116-realtimeUpgrade linux-image-lowlatency-5.15Upgrade linux-image-5.15.0-1117-awsUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-realtimeUpgrade linux-image-5.15.0-1122-azure-fdeUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-oracleUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-raspi-7.0Upgrade linux-image-realtime-7.0Upgrade linux-image-virtual-7.0Upgrade linux-image-genericUpgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-aws-lts-22.04Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-oem-20.04bUpgrade linux-image-ibm-7.0Upgrade linux-image-5.15.0-1117-aws-fipsUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-oracle-5.15Upgrade linux-image-oem-26.04aUpgrade linux-image-nvidia-bosUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-nvidia-7.0Upgrade linux-image-nvidia-5.15Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-generic-64k-5.15Upgrade linux-image-gcp-fipsUpgrade linux-image-fipsUpgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-azure-lts-22.04Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-6.8.0-1036-nvidia-tegra-rtUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-azure-fipsUpgrade linux-image-azureUpgrade linux-image-5.15.0-1113-gkeUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-5.15.0-195-lowlatency-64kUpgrade linux-image-raspiUpgrade linux-image-oem-26.04Upgrade linux-image-oem-20.04dUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-azure-lts-26.04Upgrade linux-image-realtime-5.15Upgrade linux-image-oracle-7.0Upgrade linux-image-gkeopUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-7.0.0-1012-awsUpgrade linux-image-5.15.0-1109-intel-iot-realtimeUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-nvidiaUpgrade linux-image-5.15.0-1112-intel-iotgUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-gke-64kUpgrade linux-image-lowlatencyUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-generic-lpaeUpgrade linux-image-nvidia-64kUpgrade linux-image-lowlatency-64kUpgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-ibmUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-5.15.0-1123-azure-fipsUpgrade linux-image-generic-64kUpgrade linux-image-azure-fdeUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-gcp-64kUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-aws-fips-5.15Upgrade linux-image-5.15.0-198-generic-64kUpgrade linux-image-5.15.0-1123-azureUpgrade linux-image-oracle-64kUpgrade linux-image-intelUpgrade linux-image-oem-20.04cUpgrade linux-image-oem-7.0Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-gke-64k-7.0Upgrade linux-image-gke-5.15Upgrade linux-image-5.15.0-198-fipsUpgrade linux-image-5.15.0-1114-oracleUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-oem-26.04bUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-kvm-5.15Upgrade linux-image-intel-iot-realtime-5.15 | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 31, 2026 | Jul 25, 2026 |
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