CVE-2022-23034 (GCVE-0-2022-23034)

Vulnerability from cvelistv5 – Published: 2022-01-25 13:43 – Updated: 2024-08-03 03:28
VLAI
Summary
A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.
Severity
No CVSS data available.
CWE
  • unknown
Assigner
XEN
References
URL Tags
https://xenbits.xenproject.org/xsa/advisory-394.txt x_refsource_MISC
http://www.openwall.com/lists/oss-security/2022/01/25/3 mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2022/dsa-5117 vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/202208-23 vendor-advisoryx_refsource_GENTOO
Impacted products
Vendor Product Version
Xen xen Unknown: consult Xen advisory XSA-394
Create a notification for this product.
Credits
{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Julien Grall of Amazon.'}]}}}
Show details on NVD website
To clipboard 

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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.