{"id":"CVE-2026-79603","aliases":["ALPINE-CVE-2026-79603","DEBIAN-CVE-2026-79603","EUVD-2026-72721","GHSA-pwv5-r8hr-fvgr","SUSE-SU-2026:4087-1","SUSE-SU-2026:4088-1","SUSE-SU-2026:4090-1","SUSE-SU-2026:5140-1","UBUNTU-CVE-2026-79603","openSUSE-SU-2026:11738-1"],"status":"published","title":"Unconditionally do TLB flushing ahead of page scrubbing","description":"x86 PV guests can free memory pages while still keeping a stale TLB entry\npointing to them.  A TLB flush is only issued by Xen (if needed) when the\npage is re-used.  Since it's possible for the page to be scrubbed ahead of\nthe TLB flush, there's a window where a PV guest can modify an already\nscrubbed page.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00222,"percentile":0.12956,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-664"],"published":"2026-09-08T12:00:00Z","modified":"2026-11-10T13:15:07Z","fixes":[{"ecosystem":"Alpine:v3.21","package":"xen","fixed_in":["4.19.6-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"xen","fixed_in":["4.20.4-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"xen","fixed_in":["4.20.4-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"xen","fixed_in":["4.21.2-r1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"xen","fixed_in":["4.17.7+13-g2445b30a44-0+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"xen","fixed_in":["4.20.4+39-gf1e1321c87-0+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"xen","fixed_in":["4.20.4+39-gf1e1321c87-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.21","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.19.6-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.21.2-r1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.17.7+13-g2445b30a44-0+deb12u1"}]}],"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"]},{"source":"osv","ecosystem":"Debian:13","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4+39-gf1e1321c87-0+deb13u1"}]}],"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"]},{"source":"osv","ecosystem":"Debian:14","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4+39-gf1e1321c87-1"}]}],"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"]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Micro 5.5","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.17.6_16-150500.3.79.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Micro 5.3","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.16.7_14-150400.4.92.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Micro 5.4","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.16.7_14-150400.4.92.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP7","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4_04-150700.3.46.1"}]}],"bundled":18},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Server Applications 15 SP7","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.20.4_04-150700.3.46.1"}]}],"bundled":18},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 15 SP6-LTSS","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.6_03-150600.3.56.1"}]}],"bundled":9},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP6","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.6_03-150600.3.56.1"}]}],"bundled":9},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.1-0ubuntu1","4.5.1-0ubuntu2","4.6.0-1ubuntu1","4.6.0-1ubuntu2","4.6.0-1ubuntu4","4.6.0-1ubuntu4.1","4.6.0-1ubuntu4.2","4.6.0-1ubuntu4.3","4.6.5-0ubuntu1","4.6.5-0ubuntu1.1","4.6.5-0ubuntu1.2","4.6.5-0ubuntu1.4"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.9.0-0ubuntu3","4.9.0-0ubuntu4","4.9.2-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.9.2-0ubuntu2","4.9.2-0ubuntu6","4.9.2-0ubuntu7","4.11.3+24-g14b62ab3e5-1ubuntu1","4.11.3+24-g14b62ab3e5-1ubuntu2","4.11.3+24-g14b62ab3e5-1ubuntu2.2","4.11.3+24-g14b62ab3e5-1ubuntu2.3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.11.4+24-gddaaccbbab-1ubuntu2","4.16.0-1~ubuntu2","4.16.0-1~ubuntu2.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.17.2-1","4.17.2+55-g0b56bed864-1","4.17.2+76-ge1f9cb16e2-1","4.17.2+76-ge1f9cb16e2-1ubuntu1","4.17.3+10-g091466ba55-1","4.17.3+10-g091466ba55-1.1ubuntu2","4.17.3+10-g091466ba55-1.1ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.20.2+7-g1badcf5035-2build2","4.20.2+37-g61ff35323e-1ubuntu1","4.20.3+127-gc42374a105-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.20.0+68-g35cb38b222-1","4.20.2+7-g1badcf5035-2","4.20.2+7-g1badcf5035-2build2"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.22.0_04-1.1"}]}],"bundled":3}],"products":[{"vendor":"xen","product":"xen"}],"references":[{"url":"https://xenbits.xenproject.org/xsa/advisory-511.html"},{"url":"http://xenbits.xen.org/xsa/advisory-511.html"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/08/8"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-79603"},{"url":"https://github.com/advisories/GHSA-pwv5-r8hr-fvgr"},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-79603","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-79603","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20264087-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1276838","tags":["report"]},{"url":"https://bugzilla.suse.com/1276839","tags":["report"]},{"url":"https://bugzilla.suse.com/1276841","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62437","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-79602","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-79603","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20264088-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20264090-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1027519","tags":["report"]},{"url":"https://bugzilla.suse.com/1271528","tags":["report"]},{"url":"https://bugzilla.suse.com/1271530","tags":["report"]},{"url":"https://bugzilla.suse.com/1271531","tags":["report"]},{"url":"https://bugzilla.suse.com/1271532","tags":["report"]},{"url":"https://bugzilla.suse.com/1271533","tags":["report"]},{"url":"https://bugzilla.suse.com/1271534","tags":["report"]},{"url":"https://bugzilla.suse.com/1271535","tags":["report"]},{"url":"https://bugzilla.suse.com/1271536","tags":["report"]},{"url":"https://bugzilla.suse.com/1271537","tags":["report"]},{"url":"https://bugzilla.suse.com/1271538","tags":["report"]},{"url":"https://bugzilla.suse.com/1271539","tags":["report"]},{"url":"https://bugzilla.suse.com/1271947","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42493","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42494","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42495","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62423","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62424","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62425","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62426","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62427","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62428","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62429","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62430","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62431","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62432","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62433","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-62434","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20265140-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1283321","tags":["report"]},{"url":"https://bugzilla.suse.com/1283322","tags":["report"]},{"url":"https://bugzilla.suse.com/1283323","tags":["report"]},{"url":"https://bugzilla.suse.com/1283325","tags":["report"]},{"url":"https://bugzilla.suse.com/1288663","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-102700","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-102703","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-102704","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-79609","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-79610","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-79611","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2026-79603","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-79603","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-79603","title":"Unconditionally do TLB flushing ahead of page scrubbing","description":"x86 PV guests can free memory pages while still keeping a stale TLB entry\npointing to them.  A TLB flush is only issued by Xen (if needed) when the\npage is re-used.  Since it's possible for the page to be scrubbed ahead of\nthe TLB flush, there's a window where a PV guest can modify an already\nscrubbed page.","status":"published","published":"2026-09-08T12:11:21.789Z","modified":"2026-09-08T17:08:33.807Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-664"],"updated_at":"2026-11-02T13:50:38.739766Z"}],"euvd":[{"id":"EUVD-2026-72721","description":"x86 PV guests can free memory pages while still keeping a stale TLB entry\npointing to them.  A TLB flush is only issued by Xen (if needed) when the\npage is re-used.  Since it's possible for the page to be scrubbed ahead of\nthe TLB flush, there's a window where a PV guest can modify an already\nscrubbed page.","status":"published","published":"2026-09-08T12:11:21Z","modified":"2026-09-08T17:08:33Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T17:28:28.997972Z"}],"ghsa":[{"id":"GHSA-pwv5-r8hr-fvgr","title":"x86 PV guests can free memory pages while still keeping a stale TLB entry\npointing to them.  A...","description":"x86 PV guests can free memory pages while still keeping a stale TLB entry\npointing to them.  A TLB flush is only issued by Xen (if needed) when the\npage is re-used.  Since it's possible for the page to be scrubbed ahead of\nthe TLB flush, there's a window where a PV guest can modify an already\nscrubbed page.","status":"published","published":"2026-09-08T15:31:54Z","modified":"2026-09-08T18:31:48Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-664"],"updated_at":"2026-11-02T15:11:28.397774Z"}],"nvd":[{"id":"CVE-2026-79603","description":"x86 PV guests can free memory pages while still keeping a stale TLB entry\npointing to them.  A TLB flush is only issued by Xen (if needed) when the\npage is re-used.  Since it's possible for the page to be scrubbed ahead of\nthe TLB flush, there's a window where a PV guest can modify an already\nscrubbed page.","status":"published","published":"2026-09-08T13:17:27.253Z","modified":"2026-09-08T19:20:25.117Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-664"],"updated_at":"2026-11-02T14:12:44.436435Z"}],"osv":[{"id":"ALPINE-CVE-2026-79603","description":"x86 PV guests can free memory pages while still keeping a stale TLB entry\npointing to them.  A TLB flush is only issued by Xen (if needed) when the\npage is re-used.  Since it's possible for the page to be scrubbed ahead of\nthe TLB flush, there's a window where a PV guest can modify an already\nscrubbed page.","status":"published","published":"2026-09-08T13:17:27.253Z","modified":"2026-10-01T02:17:49.412318338Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:27:50.764331Z"},{"id":"DEBIAN-CVE-2026-79603","description":"x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them.  A TLB flush is only issued by Xen (if needed) when the page is re-used.  Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbed page.","status":"published","published":"2026-09-08T13:17:27.253Z","modified":"2026-11-04T23:02:29.63698807Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-04T23:09:59.08306Z"},{"id":"UBUNTU-CVE-2026-79603","description":"x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them.  A TLB flush is only issued by Xen (if needed) when the page is re-used.  Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbed page.","status":"published","published":"2026-09-08T12:00:00Z","modified":"2026-10-17T13:01:10.480279738Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T16:57:18.015985Z"},{"id":"openSUSE-SU-2026:11738-1","title":"xen-4.22.0_04-1.1 on GA media","description":"These are all security issues fixed in the xen-4.22.0_04-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-09-09T00:00:00Z","modified":"2026-09-10T18:23:46.113454173Z","updated_at":"2026-11-02T16:58:39.516824Z"},{"id":"SUSE-SU-2026:4087-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2026-62437: x86: DMs may cause mem leak by IRQ binding (bsc#1276838).\n- CVE-2026-79602: x86: improper handling of HVM emulation return codes (bsc#1276839).\n- CVE-2026-79603: unconditionally do TLB flushing ahead of page scrubbing (bsc#1276841).\n","status":"published","published":"2026-09-08T12:26:17Z","modified":"2026-09-13T18:23:21.244046726Z","updated_at":"2026-11-02T15:54:05.392906Z"},{"id":"SUSE-SU-2026:4088-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2026-62437: x86: DMs may cause mem leak by IRQ binding (bsc#1276838).\n- CVE-2026-79602: x86: improper handling of HVM emulation return codes (bsc#1276839).\n- CVE-2026-79603: unconditionally do TLB flushing ahead of page scrubbing (bsc#1276841).\n","status":"published","published":"2026-09-08T12:26:32Z","modified":"2026-09-13T18:23:20.566447327Z","updated_at":"2026-11-02T15:54:05.392906Z"},{"id":"SUSE-SU-2026:4090-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\nUpdate to version 4.20.3 (jsc#PED-8907).\n\nSecurity issues fixed:\n\n- CVE-2026-42493: x86 shadow paging is deprecated (bsc#1271528).\n- CVE-2026-42494,CVE-2026-42495,CVE-2026-62423,CVE-2026-62424,CVE-2026-62425: buffer overruns in libfsimage iso9660\n  handling (bsc#1271530).\n- CVE-2026-62426,CVE-2026-62427: sysctl and platform-op locks open to abuse (bsc#1271531).\n- CVE-2026-62428: grant-table: type confusion in grant-copy (bsc#1271532).\n- CVE-2026-62429: vNUMA domain cleanup may race other operations (bsc#1271534).\n- CVE-2026-62430: x86: Out-of-bounds read in vRTC emulation (bsc#1271535).\n- CVE-2026-62431: Viridian STIMER division by zero (bsc#1271536).\n- CVE-2026-62432: evtchn: Race between FIFO expand and reset (bsc#1271537).\n- CVE-2026-62433: correct buffer checks for DM_OP hypercalls (bsc#1271538).\n- CVE-2026-62434: PoD: Don't try to reclaim special pages (bsc#1271539).\n- CVE-2026-62437: x86: DMs may cause mem leak by IRQ binding (bsc#1276838).\n- CVE-2026-79602: x86: improper handling of HVM emulation return codes (bsc#1276839).\n- CVE-2026-79603: unconditionally do TLB flushing ahead of page scrubbing (bsc#1276841).\n- pygrub is only supported in de-privileged mode (bsc#1271947).\n\nNon security issue fixed:\n\n- Xen: Missing upstream bug fixes (bsc#1027519).\n","status":"published","published":"2026-09-08T12:26:56Z","modified":"2026-09-13T18:23:20.566887008Z","updated_at":"2026-11-02T15:54:05.392906Z"},{"id":"SUSE-SU-2026:5140-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2026-62437: x86: DMs may cause mem leak by IRQ binding (bsc#1276838).\n- CVE-2026-79602: x86: improper handling of HVM emulation return codes (bsc#1276839).\n- CVE-2026-79603: unconditionally do TLB flushing ahead of page scrubbing (bsc#1276841).\n- CVE-2026-79609: x86: XPTI may break on huge-memory systems (bsc#1283321).\n- CVE-2026-79610: grant-table: double version change race (bsc#1283322).\n- CVE-2026-79611: VMX: VMentry failure with branch tracing and blocked states (bsc#1283323).\n- CVE-2026-102700: gnttab: cache-flush handling may cause page reference leak (bsc#1283325).\n- CVE-2026-102703,CVE-2026-102704: arbitrary read/write via grant copy (bsc#1288663).\n\nNon security issue fixed:\n\n- Update to Xen 4.18.6 security bug fix release (bsc#1027519).\n","status":"published","published":"2026-11-09T13:24:47Z","modified":"2026-11-10T13:15:07.782924083Z","updated_at":"2026-11-10T13:29:51.103746Z"}]}}