github - ghsa-256m-rvq9-56mx

GHSA-256M-RVQ9-56MX

Vulnerability from github – Published: 2022-07-06 00:00 – Updated: 2022-07-16 00:00

Details

Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests' memory pages.

Severity ?

4.7 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-33744"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-07-05T13:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests\u0027 memory pages.",
  "id": "GHSA-256m-rvq9-56mx",
  "modified": "2022-07-16T00:00:30Z",
  "published": "2022-07-06T00:00:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-33744"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5191"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xenproject.org/xsa/advisory-406.txt"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2022/07/05/4"
    },
    {
      "type": "WEB",
      "url": "http://xenbits.xen.org/xsa/advisory-406.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-33744 (GCVE-0-2022-33744)

Vulnerability from cvelistv5 – Published: 2022-07-05 12:50 – Updated: 2024-08-03 08:09

Summary

Severity ?

No CVSS data available.

CWE

unknown

Assigner

XEN

References

URL

Tags

	https://xenbits.xenproject.org/xsa/advisory-406.txt	x_refsource_MISC
	http://xenbits.xen.org/xsa/advisory-406.html	x_refsource_CONFIRM
	http://www.openwall.com/lists/oss-security/2022/07/05/4	mailing-listx_refsource_MLIST
	https://www.debian.org/security/2022/dsa-5191	vendor-advisoryx_refsource_DEBIAN
	https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Impacted products

	Vendor	Product	Version
	Linux	Linux	Unknown: consult Xen advisory XSA-406

Credits

{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Oleksandr Tyshchenko of EPAM.'}]}}}

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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.

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GHSA-256M-RVQ9-56MX

CVE-2022-33744 (GCVE-0-2022-33744)

Tags

Sightings

Nomenclature