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ALPINE-CVE-2022-23034

ALPINE-CVE-2022-23034 PUBLISHED CVSS 5.5 MEDIUM

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.

Risk Scores

CVSS v3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Alpine:v3.18xen4.2.0-r7, 4.14.0-r0, 4.14.0-r1
Alpine:v3.17xen4.9.1-r0, 4.9.1-r3, 4.9.1-r2
Alpine:v3.22xen4.4.1-r1, 4.13.0-r4, 4.13.0-r3
Alpine:v3.20xen4.10.0-r0, 4.1.3-r0, 4.1.2-r9
Alpine:v3.15xen4.12.0-r0, 4.0.1-r0, 4.0.1-r1
Alpine:v3.19xen4.14.1-r2, 4.0.1-r3, 0
Alpine:v3.16xen4.5.1-r3, 4.6.0-r0, 4.6.0-r1
Alpine:v3.21xen4.12.0-r2, 0, 4.0.1-r0
Alpine:v3.14xen4.9.1-r3, 4.15.1-r1, 4.15.1-r2
Alpine:v3.13xen4.9.1-r1, 4.9.1-r0, 4.9.0-r8
Alpine:v3.23xen4.14.1-r2, 4.9.0-r1, 4.9.0-r2
Alpine:v3.12xen4.13.1-r0, 4.13.0-r4, 4.13.0-r3

Timeline

  • Jan 25, 2022 CVE Published
  • Dec 3, 2025 CVE Updated
  • Apr 30, 2026 Distribution Patch
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