CVE-2023-52511: linux kernel — Fix

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.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 5.15.134
linux	linux_kernel	5.16 — 6.1.56
linux	linux_kernel	6.2 — 6.5.6

References

Advisories & Patches

https://git.kernel.org/stable/c/171f8a49f212e87a8b04087568e1b3d132e36a18 https://git.kernel.org/stable/c/b3c21c9c7289692f4019f163c3b06d8bdf78b355 https://git.kernel.org/stable/c/e15bb292b24630ee832bfc7fd616bd72c7682bbb https://git.kernel.org/stable/c/ff05ed4ae214011464a0156f05cac1b0b46b5fbc https://git.kernel.org/stable/c/171f8a49f212e87a8b04087568e1b3d132e36a18 https://git.kernel.org/stable/c/b3c21c9c7289692f4019f163c3b06d8bdf78b355 https://git.kernel.org/stable/c/e15bb292b24630ee832bfc7fd616bd72c7682bbb https://git.kernel.org/stable/c/ff05ed4ae214011464a0156f05cac1b0b46b5fbc

Frequently Asked Questions

What is CVE-2023-52511? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2023-52511? +

CVE-2023-52511 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-52511? +

CVE-2023-52511 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-52511? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-52511