Bug 2396512 (CVE-2023-53434)

Summary: CVE-2023-53434 kernel: remoteproc: imx_dsp_rproc: Add custom memory copy implementation for i.MX DSP Cores
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A memory bug denial of service vulnerability exists in the linux kernel such that according to the hardware specification, only 32-bits write are allowed Otherwise, we get a Kernel panic,c leading to damage of the availability and integrity of the system
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Description OSIDB Bzimport 2025-09-18 17:02:33 UTC 
In the Linux kernel, the following vulnerability has been resolved:

remoteproc: imx_dsp_rproc: Add custom memory copy implementation for i.MX DSP Cores

The IRAM is part of the HiFi DSP.
According to hardware specification only 32-bits write are allowed
otherwise we get a Kernel panic.

Therefore add a custom memory copy and memset functions to deal with
the above restriction.
Comment 1 Keith Grant 2025-09-18 20:11:18 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091858-CVE-2023-53434-243b@gregkh/T