CVE-2022-23034
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-23034
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-23034.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-23034
- Downstream
- Related
- Published
- 2022-01-25T14:15:09Z
- Modified
- 2025-08-09T19:01:26Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- 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.
- References
-
- http://www.openwall.com/lists/oss-security/2022/01/25/3
- https://security.gentoo.org/glsa/202208-23
- https://www.debian.org/security/2022/dsa-5117
- https://xenbits.xenproject.org/xsa/advisory-394.txt
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/