github - ghsa-c673-578f-v4xm

ghsa-c673-578f-v4xm

Vulnerability from github

Published

2024-03-25 12:30

Modified

2024-03-25 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

USB: usbfs: Don't WARN about excessively large memory allocations

Syzbot found that the kernel generates a WARNing if the user tries to submit a bulk transfer through usbfs with a buffer that is way too large. This isn't a bug in the kernel; it's merely an invalid request from the user and the usbfs code does handle it correctly.

In theory the same thing can happen with async transfers, or with the packet descriptor table for isochronous transfers.

To prevent the MM subsystem from complaining about these bad allocation requests, add the __GFP_NOWARN flag to the kmalloc calls for these buffers.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47170"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-25T10:15:08Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: usbfs: Don\u0027t WARN about excessively large memory allocations\n\nSyzbot found that the kernel generates a WARNing if the user tries to\nsubmit a bulk transfer through usbfs with a buffer that is way too\nlarge.  This isn\u0027t a bug in the kernel; it\u0027s merely an invalid request\nfrom the user and the usbfs code does handle it correctly.\n\nIn theory the same thing can happen with async transfers, or with the\npacket descriptor table for isochronous transfers.\n\nTo prevent the MM subsystem from complaining about these bad\nallocation requests, add the __GFP_NOWARN flag to the kmalloc calls\nfor these buffers.",
  "id": "GHSA-c673-578f-v4xm",
  "modified": "2024-03-25T12:30:52Z",
  "published": "2024-03-25T12:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47170"
    },
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  "schema_version": "1.4.0",
  "severity": []
}

cve-2021-47170

Vulnerability from cvelistv5

Published

2024-03-25 09:16

Modified

2024-11-04 12:00

Severity ?

Summary

USB: usbfs: Don't WARN about excessively large memory allocations

References

▼	URL	Tags
	https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb
	https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83
	https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed
	https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098
	https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de

Impacted products

▼	Vendor	Product
	Linux	Linux
	Linux	Linux

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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