{"action":"Upgrade xen to 4.9.3-r1 or later.","affected":[{"fixed":"4.9.3-r1","introduced":"4.9.0"}],"component":"xen","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.7","exploited":false,"fixed_versions":["4.9.3-r1"],"id":"tcs_01M5NAK5NTK1FXR76DA9H3WWVM","modified_at":"2026-10-23T17:17:55.236086277Z","published_at":"2018-11-01T00:29:00.190Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2018-18883","https://security.alpinelinux.org/vuln/CVE-2018-18883"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2018-18883#Alpine:v3.7/xen","url":"https://osv.dev/vulnerability/ALPINE-CVE-2018-18883"}],"summary":"An issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecifie"}