CVE-2022-50023: dmaengine: dw-axi-dmac: ignore interrupt if no descriptor

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-18 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-axi-dmac: ignore interrupt if no descriptor If the channel has no descriptor and the interrupt is raised then the kernel will OOPS. Check the result of vchan_next_desc() in the handler axi_chan_block_xfer_complete() to avoid the error happening.

Affected products

Linux kernel: before 5.15.63; from 5.16 before 5.19.4 — fixed in 5.15.63, 5.19.4

How to fix

Upgrade to a fixed version: Linux kernel 5.15.63, 5.19.4. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/3d05aeebbde8c69593d8aa512b7c08b8f0ad25ba
https://git.kernel.org/stable/c/54aa6c49361b79f7f6b15fc63dfe9ea52c70bb03
https://git.kernel.org/stable/c/820f5ce999d2f99961e88c16d65cd26764df0590

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