{"action":"Upgrade xen to 4.11.3+24-g14b62ab3e5-1 or later.","affected":[{"fixed":"4.11.3+24-g14b62ab3e5-1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["4.11.3+24-g14b62ab3e5-1"],"id":"tcs_01M5NE1BRKZ3HKQFEMAHMJWN8Q","modified_at":"2026-09-21T07:03:10.207285139Z","published_at":"2019-10-31T14:15:11.137Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-18423","https://security-tracker.debian.org/tracker/CVE-2019-18423"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-18423#Debian:13/xen","url":"https://osv.dev/vulnerability/DEBIAN-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"}