CVE-2023-52517: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: spi: sun6i: fix race between DMA RX transfer completion and RX FIFO drain Previously the transfer complete IRQ immediately drained to RX FIFO to read any data remaining in FIFO to the RX buffer. This behaviour is correct when dealing with SPI in interrupt mode. However in DMA mode the transfer complete interrupt still fires as soon as all bytes to be transferred have been stored in the FIFO. At that point data in the FIFO still needs to be picked up by the DMA engine. Thus the drain procedure and DMA engine end up racing to read from RX FIFO, corrupting any data read. Additionally the RX buffer pointer is never adjusted according to DMA progress in DMA mode, thus calling the RX FIFO drain procedure in DMA mode is a bug. Fix corruptions in DMA RX mode by draining RX FIFO only in interrupt mode. Also wait for completion of RX DMA when in DMA mode before returning to ensure all data has been copied to the supplied memory buffer.

Is your site exposed to CVE-2023-52517?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.0

HIGH

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

Weakness Type (CWE)

CWE-362 CWE-362

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/1f11f4202caf5710204d334fe63392052783876d https://git.kernel.org/stable/c/36b29974a7ad2ff604c24ad348f940506c7b1209 https://git.kernel.org/stable/c/4e149d524678431638ff378ef6025e4e89b71097 https://git.kernel.org/stable/c/bd1ec7f9983b5cd3c77e0f7cda3fa8aed041af2f https://git.kernel.org/stable/c/1f11f4202caf5710204d334fe63392052783876d https://git.kernel.org/stable/c/36b29974a7ad2ff604c24ad348f940506c7b1209 https://git.kernel.org/stable/c/4e149d524678431638ff378ef6025e4e89b71097 https://git.kernel.org/stable/c/bd1ec7f9983b5cd3c77e0f7cda3fa8aed041af2f

Frequently Asked Questions

What is CVE-2023-52517? +

In the Linux kernel, the following vulnerability has been resolved: spi: sun6i: fix race between DMA RX transfer completion and RX FIFO drain Previously the transfer complete IRQ immediately drained to RX FIFO to read any data remaining in FIFO to the RX buffer. This behaviour is correct when dealing with SPI in interrupt mode. However in DMA mode the transfer complete interrupt still fires as soon as all bytes to be transferred have been stored in the FIFO. At that point data in the FIFO still needs to be picked up by the DMA engine. Thus the drain procedure and DMA engine end up racing to read from RX FIFO, corrupting any data read. Additionally the RX buffer pointer is never adjusted according to DMA progress in DMA mode, thus calling the RX FIFO drain procedure in DMA mode is a bug. Fix corruptions in DMA RX mode by draining RX FIFO only in interrupt mode. Also wait for completion of RX DMA when in DMA mode before returning to ensure all data has been copied to the supplied memory buffer. It has a CVSS v3.1 base score of 7.0 (HIGH).

How severe is CVE-2023-52517? +

CVE-2023-52517 has a CVSS v3.1 score of 7.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-52517? +

CVE-2023-52517 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-2023-52517? +

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.

Related Vulnerabilities

CVE-2026-41458

OwnTone Server versions 28.4 through 29.0 contain a race condition vulnerability in the DAAP login handler that allows unauthenticated attackers …

CVE-2025-13036

An authentication bypass security issue exists within FactoryTalk Historian Site Edition. By continually sending requests to the login endpoint, an …

CVE-2025-0372

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in HYPR Passwordless on Windows allows Privilege Escalation.This issue …

CVE-2025-59052

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Angular uses a …

CVE-2024-47534

go-tuf is a Go implementation of The Update Framework (TUF). The go-tuf client inconsistently traces the delegations. For example, if …

CVE-2025-64118

node-tar is a Tar for Node.js. In 7.5.1, using .t (aka .list) with { sync: true } to read tar …

CVE-2023-52517