# CVE-2023-52511: linux: In the Linux kernel, the following vulnerability has been resolved:  spi: sun6i: reduce DMA RX transfer width to sing...

CVE-2023-52511 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52511, released March 2, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-52511
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0081
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 2, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  spi: sun6i: reduce DMA RX transfer width to single byte  Through empirical testing it has been determined that sometimes RX SPI transfers with DMA enabled return corrupted data. This is down to single or even multiple bytes lost during DMA transfer from SPI peripheral to memory. It seems the RX FIFO within the SPI peripheral can become confused when performing bus read accesses wider than a single byte to it during an active SPI transfer.  This patch reduces the width of individual DMA read accesses to the RX FIFO to a single byte to mitigate that issue.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.64-1 | [DEBIAN-CVE-2023-52511](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52511.md) | Mar 2, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.5.6-1 | [DEBIAN-CVE-2023-52511](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52511.md) | Mar 2, 2024 |
| Linux | linux Debian 14 | 6.5.6-1 | [DEBIAN-CVE-2023-52511](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52511.md) | Mar 2, 2024 |

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