{"id":"ALPINE-CVE-2026-102699","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.","modified":"2026-10-14T09:30:02.444770956Z","published":"2026-10-13T16:17:09.510Z","upstream":["CVE-2026-102699"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2026-102699"}],"affected":[{"package":{"name":"xen","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/xen?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.19.6-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-102699.json"}},{"package":{"name":"xen","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/xen?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-102699.json"}},{"package":{"name":"xen","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/xen?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-102699.json"}},{"package":{"name":"xen","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/xen?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.21.2-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-102699.json"}}],"schema_version":"1.9.0"}