Fedora 28 : xen (2019-bce6498890)
High Nessus Plugin ID 123046
SynopsisThe remote Fedora host is missing a security update.
Descriptionxen: various flaws (#1685577) grant table transfer issues on large hosts [XSA-284] race with pass-through device hotplug [XSA-285] x86:
steal_page violates page_struct access discipline [XSA-287] x86:
Inconsistent PV IOMMU discipline [XSA-288] missing preemption in x86 PV page table unvalidation [XSA-290] x86/PV: page type reference counting issue with failed IOMMU update [XSA-291] x86: insufficient TLB flushing when using PCID [XSA-292] x86: PV kernel context switch corruption [XSA-293] x86 shadow: Insufficient TLB flushing when using PCID [XSA-294]
update to xen-4.10.3
- insufficient TLB flushing / improper large page mappings with AMD IOMMUs [XSA-275] (#1651665)
- x86: DoS from attempting to use INVPCID with a non-canonical addresses [XSA-279]
- Fix for XSA-240 conflicts with shadow paging [XSA-280]
guest use of HLE constructs may lock up host [XSA-282]
Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected xen package.