Vulnerability Details : CVE-2021-47374

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).
Published 2024-05-21 15:15:23
Updated 2025-05-12 19:52:58
Source Linux
View at NVD,   CVE.org

Products affected by CVE-2021-47374

Exploit prediction scoring system (EPSS) score for CVE-2021-47374

EPSS FAQ
0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 9 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-47374

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.5
 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1.8
3.6
 NIST 2025-05-12

CWE ids for CVE-2021-47374

  • The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-47374

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