Description
In the Linux kernel, the following vulnerability has been resolved: Avoid hw_desc array overrun in dw-axi-dmac I have a use case where nr_buffers = 3 and in which each descriptor is composed by 3 segments, resulting in the DMA channel descs_allocated to be 9. Since axi_desc_put() handles the hw_desc considering the descs_allocated, this scenario would result in a kernel panic (hw_desc array will be overrun). To fix this, the proposal is to add a new member to the axi_dma_desc structure, where we keep the number of allocated hw_descs (axi_desc_alloc()) and use it in axi_desc_put() to handle the hw_desc array correctly. Additionally I propose to remove the axi_chan_start_first_queued() call after completing the transfer, since it was identified that unbalance can occur (started descriptors can be interrupted and transfer ignored due to DMA channel not being enabled).
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 6.8.0-44.44 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 6.8.0-1015.16 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1069.75~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-6.8 | — | 6.8.0-1015.16~22.04.1 |
| linux-aws-fips | — | 5.15.0-1069.75+fips1 |
| linux-azure | — | 6.8.0-1014.16 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1072.81~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-6.8 | — | 6.8.0-1014.16~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | 5.15.0-1072.81.1 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fips | — | 5.15.0-1072.81+fips1 |
| linux-bluefield | — | — |
| linux-fips | — | 6.8.0-78.78+fips1 |
| linux-gcp | — | 6.8.0-1014.16 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1068.76~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-6.8 | — | 6.8.0-1014.16~22.04.1 |
| linux-gcp-fips | — | 5.15.0-1068.76+fips1 |
| linux-gke | — | 6.8.0-1010.13 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.15.0-1052.59 |
| linux-gkeop-5.15 | — | 5.15.0-1052.59~20.04.1 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-121.131~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-6.8 | — | 6.8.0-45.45~22.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 6.8.0-1012.12 |
| linux-ibm-5.15 | — | 5.15.0-1062.65~20.04.1 |
| linux-ibm-6.8 | — | 6.8.0-1012.12~22.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1063.65 |
| linux-intel-iotg | — | 5.15.0-1064.70 |
| linux-intel-iotg-5.15 | — | 5.15.0-1064.70~20.04.1 |
| linux-kvm | — | 5.15.0-1066.71 |
| linux-lowlatency | — | 6.8.0-44.44.1 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-121.131~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lowlatency-hwe-6.8 | — | 6.8.0-44.44.1~22.04.1 |
| linux-nvidia | — | 6.8.0-1013.14 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | — |
| linux-nvidia-6.8 | — | 6.8.0-1013.14~22.04.1 |
| linux-nvidia-lowlatency | — | 6.8.0-1013.14.1 |
| linux-nvidia-tegra | — | 5.15.0-1028.28 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1030.30~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1016.16 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | — |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | — |
| linux-oem-6.1 | — | — |
| linux-oem-6.5 | — | — |
| linux-oem-6.8 | — | 6.8.0-1012.12 |
| linux-oracle | — | 6.8.0-1012.12 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1067.73~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.5 | — | — |
| linux-oracle-6.8 | — | 6.8.0-1012.12~22.04.1 |
| linux-raspi | — | 6.8.0-1011.12 |
| linux-raspi-realtime | — | 6.8.0-2010.10 |
| linux-raspi2 | — | — |
| linux-realtime | — | 6.8.1-1008.8 |
| linux-realtime-6.8 | — | 6.8.1-1008.8~22.04.1 |
| linux-riscv | — | 6.8.0-44.44.1 |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1065.69~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.5 | — | — |
| linux-riscv-6.8 | — | 6.8.0-44.44.1~22.04.1 |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
| linux-xilinx-zynqmp | — | 5.15.0-1035.39 |
References
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