SUSE: CVE-2022-23034: SUSE Linux Security Advisory
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.
Solution(s)
- suse-upgrade-xen
- suse-upgrade-xen-devel
- suse-upgrade-xen-doc-html
- suse-upgrade-xen-kmp-default
- suse-upgrade-xen-kmp-pae
- suse-upgrade-xen-libs
- suse-upgrade-xen-libs-32bit
- suse-upgrade-xen-tools
- suse-upgrade-xen-tools-domu
- suse-upgrade-xen-tools-xendomains-wait-disk
- Lightweight Endpoint Agent
- Live Dashboards
- Real Risk Prioritization
- IT-Integrated Remediation Projects
- Cloud, Virtual, and Container Assessment
- Integrated Threat Feeds
- Easy-to-Use RESTful API
- Automation-Assisted Patching
- Automated Containment
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