{"id":"DEBIAN-CVE-2026-102702","details":"[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.]  1) XSA-437 (CVE-2023-34321) addressed issues with overflows in    calculations involved in guests flushing caches through    GNTTABOP_cache_flush.  Unfortunately the fix there introduced a    calculation which may underflow, resulting in a loop which would - at    least on 64-bit Arm - take excessively long, and which would likely    eventually crash the hypervisor.     This is CVE-2026-102699.  2) GNTTABOP_cache_flush may be issued on memory mapped from another    domain using the grant table interface.  However there was no    restriction to disallow the use of invalidate-without-clean against    read-only grant mappings, which may corrupt the granted memory.     This is CVE-2026-102702.","modified":"2026-10-14T06:00:08.749939912Z","published":"2026-10-13T16:17:09.723Z","upstream":["CVE-2026-102702"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-102702"}],"affected":[{"package":{"name":"xen","ecosystem":"Debian:12","purl":"pkg:deb/debian/xen?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.17.1+2-gb773c48e36-1","4.17.2+55-g0b56bed864-1","4.17.2+76-ge1f9cb16e2-1","4.17.2+76-ge1f9cb16e2-1~deb12u1","4.17.2-1","4.17.3+10-g091466ba55-1","4.17.3+10-g091466ba55-1.1","4.17.3+10-g091466ba55-1.1~exp1","4.17.3+10-g091466ba55-1.1~exp2","4.17.3+10-g091466ba55-1~deb12u1","4.17.3+36-g54dacb5c02-1","4.17.5+23-ga4e5191dc0-1","4.17.5+23-ga4e5191dc0-1+deb12u1","4.17.5+72-g01140da4e8-1","4.17.7-0+deb12u1","4.19.0+14-g0918434e0f-1~exp1","4.19.1-1","4.19.1-1~exp1","4.19.1-1~exp4","4.20.0+68-g35cb38b222-1","4.20.0-1","4.20.0~rc2+1-gfcde5e0de8-1~exp1","4.20.2+37-g61ff35323e-1","4.20.2+7-g1badcf5035-1","4.20.2+7-g1badcf5035-2","4.20.3+127-gc42374a105-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102702.json"}},{"package":{"name":"xen","ecosystem":"Debian:13","purl":"pkg:deb/debian/xen?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.20.0+68-g35cb38b222-1","4.20.2+37-g61ff35323e-0+deb13u1","4.20.2+37-g61ff35323e-1","4.20.2+7-g1badcf5035-0+deb13u1","4.20.2+7-g1badcf5035-1","4.20.2+7-g1badcf5035-2","4.20.3+127-gc42374a105-0+deb13u1","4.20.3+127-gc42374a105-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102702.json"}},{"package":{"name":"xen","ecosystem":"Debian:14","purl":"pkg:deb/debian/xen?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.20.0+68-g35cb38b222-1","4.20.2+37-g61ff35323e-1","4.20.2+7-g1badcf5035-1","4.20.2+7-g1badcf5035-2","4.20.3+127-gc42374a105-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102702.json"}}],"schema_version":"1.9.0"}