CVE-2025-38429 Information

Description

In the Linux kernel the following vulnerability has been resolved:

bus: mhi: ep: Update read pointer only after buffer is written

Inside mhi_ep_ring_add_element the read pointer (rd_offset) is updated before the buffer is written potentially causing race conditions where the host sees an updated read pointer before the buffer is actually written. Updating rd_offset prematurely can lead to the host accessing an uninitialized or incomplete element resulting in data corruption.

Invoke the buffer write before updating rd_offset to ensure the element is fully written before signaling its availability.

Reference

https://git.kernel.org/stable/c/0007ef098dab48f1ba58364c40b4809f1e21b130 https://git.kernel.org/stable/c/44b9620e82bbec2b9a6ac77f63913636d84f96dc https://git.kernel.org/stable/c/6f18d174b73d0ceeaa341f46c0986436b3aefc9a https://git.kernel.org/stable/c/f704a80d9fa268e51a6cc5242714502c3c1fa605

Related CNNVD

CNNVD-202507-3259 (Published: 2025-07-25)