github - ghsa-5gvc-4qph-j93r

ghsa-5gvc-4qph-j93r

Vulnerability from github

Published

2022-05-24 19:06

Modified

2022-05-24 19:06

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-28691"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-06-29T12:15:00Z",
    "severity": "HIGH"
  },
  "details": "Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.",
  "id": "GHSA-5gvc-4qph-j93r",
  "modified": "2022-05-24T19:06:33Z",
  "published": "2022-05-24T19:06:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28691"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202107-30"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210805-0002"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xenproject.org/xsa/advisory-374.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-28691 (GCVE-0-2021-28691)

Vulnerability from cvelistv5

Published

2021-06-29 11:30

Modified

2024-08-03 21:47

Severity ?

CWE

unknown

Summary

Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.

References

URL

Tags

	https://xenbits.xenproject.org/xsa/advisory-374.txt	x_refsource_MISC
	https://security.gentoo.org/glsa/202107-30	vendor-advisory, x_refsource_GENTOO
	https://security.netapp.com/advisory/ntap-20210805-0002/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	Linux	Linux	Version: 5.5.0 < unspecified Patch: next of 5.12.2 < unspecified

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}

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