{"action":"Upgrade xen to 4.13.0-r0 or later.","affected":[{"fixed":"4.13.0-r0","introduced":"4.8"}],"component":"xen","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.14","exploited":false,"fixed_versions":["4.13.0-r0"],"id":"tcs_01M5NBJ2Y7YRDF6MMK09KB5011","modified_at":"2026-09-21T06:17:52.504152622Z","published_at":"2019-10-31T14:15:11.137Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2019-18423","https://security.alpinelinux.org/vuln/CVE-2019-18423"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2019-18423#Alpine:v3.14/xen","url":"https://osv.dev/vulnerability/ALPINE-CVE-2019-18423"}],"summary":"An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service via a XENMEM_add_to_physmap hypercall. p2m->max_mapped_gfn is used by the functions p2m_resolve_t"}