github - ghsa-23j5-p74r-rvqm

GHSA-23J5-P74R-RVQM

Vulnerability from github – Published: 2022-05-24 19:06 – Updated: 2022-05-24 19:06

Details

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPU(s) issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU spin-waits for the completion of the most recently issued command(s). Some of these waiting loops try to apply a timeout to fail overly-slow commands. The course of action upon a perceived timeout actually being detected is inappropriate: - on Intel hardware guests which did not originally cause the timeout may be marked as crashed, - on AMD hardware higher layer callers would not be notified of the issue, making them continue as if the IOMMU operation succeeded.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-28692"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-06-30T11:15:00Z",
    "severity": "HIGH"
  },
  "details": "inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPU(s) issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU spin-waits for the completion of the most recently issued command(s). Some of these waiting loops try to apply a timeout to fail overly-slow commands. The course of action upon a perceived timeout actually being detected is inappropriate: - on Intel hardware guests which did not originally cause the timeout may be marked as crashed, - on AMD hardware higher layer callers would not be notified of the issue, making them continue as if the IOMMU operation succeeded.",
  "id": "GHSA-23j5-p74r-rvqm",
  "modified": "2022-05-24T19:06:40Z",
  "published": "2022-05-24T19:06:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28692"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202107-30"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xenproject.org/xsa/advisory-373.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2021-28692 (GCVE-0-2021-28692)

Vulnerability from cvelistv5 – Published: 2021-06-30 10:27 – Updated: 2024-08-03 21:47

Summary

Severity ?

No CVSS data available.

CWE

unknown

Assigner

XEN

References

URL

Tags

	https://xenbits.xenproject.org/xsa/advisory-373.txt	x_refsource_MISC
	https://security.gentoo.org/glsa/202107-30	vendor-advisoryx_refsource_GENTOO

Impacted products

Vendor

Product

Version

Xen

xen

Affected: 4.13.x

Xen	xen	Affected: 4.14.x
Xen	xen	Affected: 4.15.x
Xen	xen	Affected: xen-unstable
Xen	xen	Affected: 4.12.x
Xen	xen	Affected: 4.11.x

Credits

{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Igor Druzhinin and Andrew Cooper of Citrix,\nand further issues were uncovered by by Jan Beulich of SUSE while trying\nto fix the first issue.'}]}}}

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{
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          "dateUpdated": "2024-08-03T21:47:33.190Z",
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            ],
            "url": "https://xenbits.xenproject.org/xsa/advisory-373.txt"
          },
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        ],
        "title": "CVE Program Container"
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                    "value": "A malicious guest may be able to elevate its privileges to that of the\nhost, cause host or guest Denial of Service (DoS), or cause information\nleaks."
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                    },
                    {
                      "product_name": "xen",
                      "version": {
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                }
              ]
            }
          }
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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-23J5-P74R-RVQM

CVE-2021-28692 (GCVE-0-2021-28692)

Tags

Sightings

Nomenclature