In the Linux kernel, the following vulnerability has been resolved:
sh: dma: Fix DMA channel offset calculation
Various SoCs of the SH3, SH4 and SH4A family, which use this driver, feature a differing number of DMA channels, which can be distributed between up to two DMAC modules. The existing implementation fails to correctly accommodate for all those variations, resulting in wrong channel offset calculations and leading to kernel panics.
Rewrite dma_base_addr() in order to properly calculate channel offsets in a DMAC module. Fix dmaor_read_reg() and dmaor_write_reg(), so that the correct DMAC module base is selected for the DMAOR register.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Ubuntu | — | Upgrade linux-azureUpgrade linux-raspi-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-oracleUpgrade linux-aws-5.15Upgrade linux-gcp-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-riscv-5.15Upgrade linux-nvidiaUpgrade linux-intel-iotg-5.15Upgrade linux-bluefieldUpgrade linux-fipsUpgrade linux-raspiUpgrade linux-hwe-5.15Upgrade linux-kvmUpgrade linux-intel-iotgUpgrade linux-ibmUpgrade linux-aws-fipsUpgrade linux-aws-5.4Upgrade linux-azure-5.4Upgrade linux-oracle-5.15Upgrade linux-azure-5.15Upgrade linux-gcpUpgrade linux-hwe-5.4Upgrade linux-iotUpgrade linux-realtimeUpgrade linuxUpgrade linux-nvidia-tegra-5.15Upgrade linux-intel-iot-realtimeUpgrade linux-ibm-5.4Upgrade linux-awsUpgrade linux-oracle-5.4Upgrade linux-nvidia-tegra-igxUpgrade linux-gkeopUpgrade linux-azure-fipsUpgrade linux-gkeUpgrade linux-gcp-5.4Upgrade linux-lowlatencyUpgrade linux-ibm-5.15Upgrade linux-nvidia-tegraUpgrade linux-gcp-fips | Jan 6, 2026 | Jan 2, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 30, 2025 |
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