CVE-2021-47286: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: core: Validate channel ID when processing command completions MHI reads the channel ID from the event ring element sent by the device which can be any value between 0 and 255. In order to prevent any out of bound accesses, add a check against the maximum number of channels supported by the controller and those channels not configured yet so as to skip processing of that event ring element.

Affected products

• Linux Linux Kernel: from 5.7, before 5.10.54 (fixed in 5.10.54); from 5.11, before 5.13.6 (fixed in 5.13.6); version 5.14 only

Published 2024-05-21. Last modified 2026-06-17.