In the Linux kernel, the following vulnerability has been resolved:
serial: pch: Fix PCI device refcount leak in pch_request_dma()
As comment of pci_get_slot() says, it returns a pci_device with its refcount increased. The caller must decrement the reference count by calling pci_dev_put().
Since 'dma_dev' is only used to filter the channel in filter(), we can call pci_dev_put() before exiting from pch_request_dma(). Add the missing pci_dev_put() for the normal and error path.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Oct 24, 2025 | Oct 24, 2025 |
| Ubuntu | — | Upgrade linux-nvidiaUpgrade linux-ibmUpgrade linux-xilinx-zynqmpUpgrade linux-aws-hweUpgrade linux-gcp-5.4Upgrade linux-aws-5.4Upgrade linux-intel-iotgUpgrade linux-lowlatencyUpgrade linux-aws-fipsUpgrade linux-oracle-5.15Upgrade linux-kvmUpgrade linux-hwe-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-gcp-5.15Upgrade linux-azure-5.15Upgrade linux-raspiUpgrade linux-gkeopUpgrade linux-oracleUpgrade linux-fipsUpgrade linux-gkeUpgrade linux-oracle-5.4Upgrade linux-azure-fipsUpgrade linux-riscv-5.15Upgrade linux-raspi-5.4Upgrade linux-awsUpgrade linux-gcp-4.15Upgrade linux-gcpUpgrade linux-nvidia-tegra-5.15Upgrade linux-hwe-5.15Upgrade linuxUpgrade linux-realtimeUpgrade linux-intel-iot-realtimeUpgrade linux-hweUpgrade linux-lowlatency-hwe-5.15Upgrade linux-iotUpgrade linux-aws-5.15Upgrade linux-azure-5.4Upgrade linux-gcp-fipsUpgrade linux-bluefieldUpgrade linux-azure-4.15Upgrade linux-azureUpgrade linux-ibm-5.4 | Oct 28, 2025 | Oct 24, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Oct 22, 2025 |
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