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-lowlatencyUpgrade linux-azure-fipsUpgrade linux-gkeUpgrade linux-gkeopUpgrade linux-nvidia-tegra-igxUpgrade linux-ibm-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-nvidia-tegraUpgrade linux-oracle-5.4Upgrade linux-gcp-fipsUpgrade linuxUpgrade linux-gcp-5.4Upgrade linux-ibm-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-awsUpgrade linux-hwe-5.15Upgrade linux-nvidiaUpgrade linux-aws-5.4Upgrade linux-aws-fipsUpgrade linux-azureUpgrade linux-oracle-5.15Upgrade linux-iotUpgrade linux-aws-5.15Upgrade linux-riscv-5.15Upgrade linux-azure-5.15Upgrade linux-azure-5.4Upgrade linux-gcpUpgrade linux-gcp-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-hwe-5.4Upgrade linux-raspiUpgrade linux-bluefieldUpgrade linux-lowlatency-hwe-5.15Upgrade linux-oracleUpgrade linux-intel-iotg-5.15Upgrade linux-kvmUpgrade linux-raspi-5.4Upgrade linux-realtimeUpgrade linux-fipsUpgrade linux-intel-iotgUpgrade linux-ibm | 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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