github - ghsa-335x-9j96-mxcr

GHSA-335X-9J96-MXCR

Vulnerability from github – Published: 2024-05-21 15:31 – Updated: 2025-05-12 21:30

Details

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).

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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  "aliases": [
    "CVE-2021-47374"
  ],
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:23Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndma-debug: prevent an error message from causing runtime problems\n\nFor some drivers, that use the DMA API. This error message can be reached\nseveral millions of times per second, causing spam to the kernel\u0027s printk\nbuffer and bringing the CPU usage up to 100% (so, it should be rate\nlimited). However, since there is at least one driver that is in the\nmainline and suffers from the error condition, it is more useful to\nerr_printk() here instead of just rate limiting the error message (in hopes\nthat it will make it easier for other drivers that suffer from this issue\nto be spotted).",
  "id": "GHSA-335x-9j96-mxcr",
  "modified": "2025-05-12T21:30:56Z",
  "published": "2024-05-21T15:31:44Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47374"
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      "url": "https://git.kernel.org/stable/c/510e1a724ab1bf38150be2c1acabb303f98d0047"
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  "severity": [
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}

CVE-2021-47374 (GCVE-0-2021-47374)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:03 – Updated: 2025-05-21 08:31

Summary

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).

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/de4afec2d2946c92c…
	https://git.kernel.org/stable/c/510e1a724ab1bf381…

Impacted products

Vendor

Product

Version

Linux

Affected: 2b4bbc6231d789f58676d2ccc42177df163e1c4a , < de4afec2d2946c92c62a15ab341c70b287289e6a (git)
Affected: 2b4bbc6231d789f58676d2ccc42177df163e1c4a , < 510e1a724ab1bf38150be2c1acabb303f98d0047 (git)

Linux

Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.14.9 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-335X-9J96-MXCR

CVE-2021-47374 (GCVE-0-2021-47374)

Tags

Sightings

Nomenclature