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CVE-2022-23034

UNKNOWN
Published 2022-01-25T13:43:08
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No CVSS data available

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Xen

xen

Affected Versions:

consult Xen advisory XSA-394

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-5jmq-x85f-gprc

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2022-23034
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3
WEB https://security.gentoo.org/glsa/202208-23
WEB https://www.debian.org/security/2022/dsa-5117
WEB https://xenbits.xenproject.org/xsa/advisory-394.txt
WEB http://www.openwall.com/lists/oss-security/2022/01/25/3

Advisory provided by GitHub Security Advisory Database. Published: January 26, 2022, Modified: March 26, 2022

References

https://xenbits.xenproject.org/xsa/advisory-394.txt
http://www.openwall.com/lists/oss-security/2022/01/25/3
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/
https://www.debian.org/security/2022/dsa-5117
https://security.gentoo.org/glsa/202208-23
Published: 2022-01-25T13:43:08
Last Modified: 2024-08-03T03:28:43.072Z
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