VDB
DEBIAN-CVE-2022-23034
DEBIAN-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 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | xen | 0, 0, 0 |
| Debian:11 | xen | 4.14.3-1~deb11u1, 4.14.3-1~deb11u1, 0 |
| Debian:12 | xen | 0, 0, 0 |
| Debian:14 | xen | 0, 0, 0 |
Timeline
- Jan 25, 2022 CVE Published
- Apr 28, 2026 CVE Updated