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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= bbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34, < e2176aa3ba4361e98d9f91178a762dca6cf21fe0; >= bbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34, < 44b9620e82bbec2b9a6ac77f63913636d84f96dc; >= bbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34, < f704a80d9fa268e51a6cc5242714502c3c1fa605; >= bbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34, < 0007ef098dab48f1ba58364c40b4809f1e21b130; >= bbdcba57a1a26a4439a4f4ecdbfaf80a10fd8f34, < 6f18d174b73d0ceeaa341f46c0986436b3aefc9a |
| Linux | Linux | 5.19 |
References
- https://git.kernel.org/stable/c/0007ef098dab48f1ba58364c40b4809f1e21b130Patch
- https://git.kernel.org/stable/c/44b9620e82bbec2b9a6ac77f63913636d84f96dcPatch
- https://git.kernel.org/stable/c/6f18d174b73d0ceeaa341f46c0986436b3aefc9aPatch
- https://git.kernel.org/stable/c/e2176aa3ba4361e98d9f91178a762dca6cf21fe0
- https://git.kernel.org/stable/c/f704a80d9fa268e51a6cc5242714502c3c1fa605Patch
Timeline
- Published
- Jul 25, 2025
- Last modified
- Oct 30, 2026
- NVD status
- Modified