Paper/Archive/CVE-2025-38429

CVE-2025-38429

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

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linuxbbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34 – < e2176aa3ba4361e98d9f91178a762dca6cf21fe0e2176aa3ba4361e98d9f91178a762dca6cf21fe0CNA
Linuxbbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34 – < 44b9620e82bbec2b9a6ac77f63913636d84f96dc44b9620e82bbec2b9a6ac77f63913636d84f96dcCNA
Linuxbbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34 – < f704a80d9fa268e51a6cc5242714502c3c1fa605f704a80d9fa268e51a6cc5242714502c3c1fa605CNA
Linuxbbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34 – < 0007ef098dab48f1ba58364c40b4809f1e21b1300007ef098dab48f1ba58364c40b4809f1e21b130CNA
Linuxbbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34 – < 6f18d174b73d0ceeaa341f46c0986436b3aefc9a6f18d174b73d0ceeaa341f46c0986436b3aefc9aCNA
Linux5.19–CNA

Scores by source

Linux (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

refgit.kernel.org/stable/c/e2176aa3ba4361e98d9f91178a762dca6cf21fe0refgit.kernel.org/stable/c/44b9620e82bbec2b9a6ac77f63913636d84f96dcrefgit.kernel.org/stable/c/f704a80d9fa268e51a6cc5242714502c3c1fa605refgit.kernel.org/stable/c/0007ef098dab48f1ba58364c40b4809f1e21b130refgit.kernel.org/stable/c/6f18d174b73d0ceeaa341f46c0986436b3aefc9a