{"schema":"threatline.record/2","record":{"id":"CVE-2026-102702","aliases":[],"summary":"Arm: multiple issues with GNTTABOP_cache_flush","details":"[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\n1) XSA-437 (CVE-2023-34321) addressed issues with overflows in\n   calculations involved in guests flushing caches through\n   GNTTABOP_cache_flush.  Unfortunately the fix there introduced a\n   calculation which may underflow, resulting in a loop which would - at\n   least on 64-bit Arm - take excessively long, and which would likely\n   eventually crash the hypervisor.\n\n   This is CVE-2026-102699.\n\n2) GNTTABOP_cache_flush may be issued on memory mapped from another\n   domain using the grant table interface.  However there was no\n   restriction to disallow the use of invalidate-without-clean against\n   read-only grant mappings, which may corrupt the granted memory.\n\n   This is CVE-2026-102702.","categories":["Unclassified"],"product":"Xen","vendor":"Xen","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102702","source_modified_at":"2026-10-20T17:28:13.480Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Xen","vendor":"Xen","versions":[{"status":"unknown","version":"consult Xen advisory XSA-519"}],"defaultStatus":"unknown"}],"fixed_versions":[],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00291,"percentile":0.20591,"score_date":"2026-10-23"},"published_at":"2026-10-13T15:45:13.125Z","modified_at":"2026-10-20T17:28:13.480Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102702","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T17:28:13.480Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102702","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://xenbits.xenproject.org/xsa/advisory-519.html"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-20T17:27:31.334256Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-20T17:28:13.480Z","content_hash":"05a96b8b2fd6c81016015bb66a755772830d1a4e612bef8ae6f468c69a1289e4"}}