github - ghsa-477j-vcp2-hh67

ghsa-477j-vcp2-hh67

Vulnerability from github

Published

2024-03-04 21:31

Modified

2024-03-04 21:31

Details

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

ice: xsk: return xsk buffers back to pool when cleaning the ring

Currently we only NULL the xdp_buff pointer in the internal SW ring but we never give it back to the xsk buffer pool. This means that buffers can be leaked out of the buff pool and never be used again.

Add missing xsk_buff_free() call to the routine that is supposed to clean the entries that are left in the ring so that these buffers in the umem can be used by other sockets.

Also, only go through the space that is actually left to be cleaned instead of a whole ring.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47105"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-04T19:15:18Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: xsk: return xsk buffers back to pool when cleaning the ring\n\nCurrently we only NULL the xdp_buff pointer in the internal SW ring but\nwe never give it back to the xsk buffer pool. This means that buffers\ncan be leaked out of the buff pool and never be used again.\n\nAdd missing xsk_buff_free() call to the routine that is supposed to\nclean the entries that are left in the ring so that these buffers in the\numem can be used by other sockets.\n\nAlso, only go through the space that is actually left to be cleaned\ninstead of a whole ring.",
  "id": "GHSA-477j-vcp2-hh67",
  "modified": "2024-03-04T21:31:11Z",
  "published": "2024-03-04T21:31:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47105"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad6d20da2cfbe14b7b1200d15f39e65988b0b9e8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afe8a3ba85ec2a6b6849367e25c06a2f8e0ddd05"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2021-47105

Vulnerability from cvelistv5

Published

2024-03-04 18:15

Modified

2024-12-19 07:35

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: ice: xsk: return xsk buffers back to pool when cleaning the ring Currently we only NULL the xdp_buff pointer in the internal SW ring but we never give it back to the xsk buffer pool. This means that buffers can be leaked out of the buff pool and never be used again. Add missing xsk_buff_free() call to the routine that is supposed to clean the entries that are left in the ring so that these buffers in the umem can be used by other sockets. Also, only go through the space that is actually left to be cleaned instead of a whole ring.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/ad6d20da2cfbe14b7b1200d15f39e65988b0b9e8
	https://git.kernel.org/stable/c/afe8a3ba85ec2a6b6849367e25c06a2f8e0ddd05

Impacted products

Vendor

Product

Version

▼

Linux

Version: 2d4238f5569722197612656163d824098208519c
Version: 2d4238f5569722197612656163d824098208519c

Linux

Version: 5.5

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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