| |
Vulnerability CVE-2021-47374
Published: 2024-05-21
| Description: |
In the Linux kernel, the following vulnerability has been resolved:
dma-debug: prevent an error message from causing runtime problems
For some drivers, that use the DMA API. This error message can be reached
several millions of times per second, causing spam to the kernel's printk
buffer and bringing the CPU usage up to 100% (so, it should be rate
limited). However, since there is at least one driver that is in the
mainline and suffers from the error condition, it is more useful to
err_printk() here instead of just rate limiting the error message (in hopes
that it will make it easier for other drivers that suffer from this issue
to be spotted). |
References: |
https://git.kernel.org/stable/c/de4afec2d2946c92c62a15ab341c70b287289e6a
https://git.kernel.org/stable/c/510e1a724ab1bf38150be2c1acabb303f98d0047
|
|
|
Copyright 2026, cxsecurity.com
|
|
|
