{"id":"CVE-2023-34322","aliases":["ALPINE-CVE-2023-34322","DEBIAN-CVE-2023-34322","EUVD-2023-38403","GHSA-3qxp-p56x-r4h3","SUSE-SU-2023:3831-1","SUSE-SU-2023:3832-1","SUSE-SU-2023:3894-1","SUSE-SU-2023:3895-1","SUSE-SU-2023:3902-1","SUSE-SU-2023:3903-1","SUSE-SU-2023:4475-1","SUSE-SU-2023:4476-1","UBUNTU-CVE-2023-34322","openSUSE-SU-2024:13257-1"],"status":"published","title":"top-level shadow reference dropped too early for 64-bit PV guests","description":"For migration as well as to work around kernels unaware of L1TF (see\nXSA-273), PV guests may be run in shadow paging mode.  Since Xen itself\nneeds to be mapped when PV guests run, Xen and shadowed PV guests run\ndirectly the respective shadow page tables.  For 64-bit PV guests this\nmeans running on the shadow of the guest root page table.\n\nIn the course of dealing with shortage of memory in the shadow pool\nassociated with a domain, shadows of page tables may be torn down.  This\ntearing down may include the shadow root page table that the CPU in\nquestion is presently running on.  While a precaution exists to\nsupposedly prevent the tearing down of the underlying live page table,\nthe time window covered by that precaution isn't large enough.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00221,"percentile":0.12739,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-273"],"published":"2023-09-27T17:15:27Z","modified":"2026-10-26T18:02:17Z","fixes":[{"ecosystem":"Alpine:v3.15","package":"xen","fixed_in":["4.15.5-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"xen","fixed_in":["4.16.5-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"xen","fixed_in":["4.16.5-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"xen","fixed_in":["4.17.2-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"xen","fixed_in":["4.17.2-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"xen","fixed_in":["4.17.2-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"xen","fixed_in":["4.17.2-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"xen","fixed_in":["4.17.2-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"xen","fixed_in":["4.17.2-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"xen","fixed_in":["4.17.2-r1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"xen","fixed_in":["4.17.2+76-ge1f9cb16e2-1~deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"xen","fixed_in":["4.17.2+55-g0b56bed864-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"xen","fixed_in":["4.17.2+55-g0b56bed864-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.15","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.15.5-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.16.5-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.16.5-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.17.2-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.17.2-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.17.2-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.17.2-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.17.2-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.17.2-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"4.17.2-r1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.17.2+76-ge1f9cb16e2-1~deb12u1"}]}],"versions":["4.17.1+2-gb773c48e36-1","4.17.2+55-g0b56bed864-1","4.17.2-1"]},{"source":"osv","ecosystem":"Debian:13","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.17.2+55-g0b56bed864-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.17.2+55-g0b56bed864-1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux 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Advisory","advisory"]},{"url":"http://xenbits.xen.org/xsa/advisory-438.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34322"},{"url":"https://github.com/advisories/GHSA-3qxp-p56x-r4h3"},{"url":"https://security.alpinelinux.org/vuln/CVE-2023-34322","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-34322","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20233831-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1215145","tags":["report"]},{"url":"https://bugzilla.suse.com/1215474","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2023-20588","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-34322","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20233832-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20233894-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1213616","tags":["report"]},{"url":"https://bugzilla.suse.com/1214083","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2022-40982","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-20593","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20233895-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20233902-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20233903-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20234475-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1027519","tags":["report"]},{"url":"https://bugzilla.suse.com/1215746","tags":["report"]},{"url":"https://bugzilla.suse.com/1215747","tags":["report"]},{"url":"https://bugzilla.suse.com/1215748","tags":["report"]},{"url":"https://bugzilla.suse.com/1216654","tags":["report"]},{"url":"https://bugzilla.suse.com/1216807","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2023-34325","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-34326","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-34327","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-34328","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-46835","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-46836","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20234476-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-34322","tags":["report"]},{"url":"https://xenbits.xen.org/xsa/advisory-438.html","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-34322","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-34322","title":"top-level shadow reference dropped too early for 64-bit PV guests","description":"For migration as well as to work around kernels unaware of L1TF (see\nXSA-273), PV guests may be run in shadow paging mode.  Since Xen itself\nneeds to be mapped when PV guests run, Xen and shadowed PV guests run\ndirectly the respective shadow page tables.  For 64-bit PV guests this\nmeans running on the shadow of the guest root page table.\n\nIn the course of dealing with shortage of memory in the shadow pool\nassociated with a domain, shadows of page tables may be torn down.  This\ntearing down may include the shadow root page table that the CPU in\nquestion is presently running on.  While a precaution exists to\nsupposedly prevent the tearing down of the underlying live page table,\nthe time window covered by that precaution isn't large enough.\n","status":"published","published":"2024-01-05T16:18:01.363Z","modified":"2025-11-04T19:16:35.511Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-273"],"updated_at":"2026-11-02T14:35:35.580545Z"}],"euvd":[{"id":"EUVD-2023-38403","description":"For migration as well as to work around kernels unaware of L1TF (see\nXSA-273), PV guests may be run in shadow paging mode.  Since Xen itself\nneeds to be mapped when PV guests run, Xen and shadowed PV guests run\ndirectly the respective shadow page tables.  For 64-bit PV guests this\nmeans running on the shadow of the guest root page table.\n\nIn the course of dealing with shortage of memory in the shadow pool\nassociated with a domain, shadows of page tables may be torn down.  This\ntearing down may include the shadow root page table that the CPU in\nquestion is presently running on.  While a precaution exists to\nsupposedly prevent the tearing down of the underlying live page table,\nthe time window covered by that precaution isn't large enough.\n","status":"published","published":"2024-01-05T16:18:01Z","modified":"2025-11-04T19:16:35Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:49:22.434386Z"}],"ghsa":[{"id":"GHSA-3qxp-p56x-r4h3","title":"For migration as well as to work around kernels unaware of L1TF (see\nXSA-273), PV guests may be...","description":"For migration as well as to work around kernels unaware of L1TF (see\nXSA-273), PV guests may be run in shadow paging mode.  Since Xen itself\nneeds to be mapped when PV guests run, Xen and shadowed PV guests run\ndirectly the respective shadow page tables.  For 64-bit PV guests this\nmeans running on the shadow of the guest root page table.\n\nIn the course of dealing with shortage of memory in the shadow pool\nassociated with a domain, shadows of page tables may be torn down.  This\ntearing down may include the shadow root page table that the CPU in\nquestion is presently running on.  While a precaution exists to\nsupposedly prevent the tearing down of the underlying live page table,\nthe time window covered by that precaution isn't large enough.","status":"published","published":"2024-01-05T18:30:25Z","modified":"2025-11-04T21:30:54Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-273"],"updated_at":"2026-11-02T15:04:36.009389Z"}],"nvd":[{"id":"CVE-2023-34322","description":"For migration as well as to work around kernels unaware of L1TF (see\nXSA-273), PV guests may be run in shadow paging mode.  Since Xen itself\nneeds to be mapped when PV guests run, Xen and shadowed PV guests run\ndirectly the respective shadow page tables.  For 64-bit PV guests this\nmeans running on the shadow of the guest root page table.\n\nIn the course of dealing with shortage of memory in the shadow pool\nassociated with a domain, shadows of page tables may be torn down.  This\ntearing down may include the shadow root page table that the CPU in\nquestion is presently running on.  While a precaution exists to\nsupposedly prevent the tearing down of the underlying live page table,\nthe time window covered by that precaution isn't large enough.\n","status":"published","published":"2024-01-05T17:15:08.447Z","modified":"2026-06-17T06:03:23.183Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-273"],"updated_at":"2026-11-02T14:08:59.830468Z"}],"osv":[{"id":"ALPINE-CVE-2023-34322","description":"For migration as well as to work around kernels unaware of L1TF (see\nXSA-273), PV guests may be run in shadow paging mode.  Since Xen itself\nneeds to be mapped when PV guests run, Xen and shadowed PV guests run\ndirectly the respective shadow page tables.  For 64-bit PV guests this\nmeans running on the shadow of the guest root page table.\n\nIn the course of dealing with shortage of memory in the shadow pool\nassociated with a domain, shadows of page tables may be torn down.  This\ntearing down may include the shadow root page table that the CPU in\nquestion is presently running on.  While a precaution exists to\nsupposedly prevent the tearing down of the underlying live page table,\nthe time window covered by that precaution isn't large enough.\n","status":"published","published":"2024-01-05T17:15:08.447Z","modified":"2026-10-26T17:17:58.626020214Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:27:49.709457Z"},{"id":"CVE-2023-34322","description":"For migration as well as to work around kernels unaware of L1TF (see\nXSA-273), PV guests may be run in shadow paging mode.  Since Xen itself\nneeds to be mapped when PV guests run, Xen and shadowed PV guests run\ndirectly the respective shadow page tables.  For 64-bit PV guests this\nmeans running on the shadow of the guest root page table.\n\nIn the course of dealing with shortage of memory in the shadow pool\nassociated with a domain, shadows of page tables may be torn down.  This\ntearing down may include the shadow root page table that the CPU in\nquestion is presently running on.  While a precaution exists to\nsupposedly prevent the tearing down of the underlying live page table,\nthe time window covered by that precaution isn't large enough.\n","status":"published","published":"2024-01-05T17:15:08.447Z","modified":"2026-03-14T12:07:22.513876Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:32.116263Z"},{"id":"DEBIAN-CVE-2023-34322","description":"For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode.  Since Xen itself needs to be mapped when PV guests run, Xen and shadowed PV guests run directly the respective shadow page tables.  For 64-bit PV guests this means running on the shadow of the guest root page table.  In the course of dealing with shortage of memory in the shadow pool associated with a domain, shadows of page tables may be torn down.  This tearing down may include the shadow root page table that the CPU in question is presently running on.  While a precaution exists to supposedly prevent the tearing down of the underlying live page table, the time window covered by that precaution isn't large enough.","status":"published","published":"2024-01-05T17:15:08.447Z","modified":"2026-10-26T18:02:17.7313132Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:39.679062Z"},{"id":"UBUNTU-CVE-2023-34322","description":"For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode.  Since Xen itself needs to be mapped when PV guests run, Xen and shadowed PV guests run directly the respective shadow page tables.  For 64-bit PV guests this means running on the shadow of the guest root page table. In the course of dealing with shortage of memory in the shadow pool associated with a domain, shadows of page tables may be torn down.  This tearing down may include the shadow root page table that the CPU in question is presently running on.  While a precaution exists to supposedly prevent the tearing down of the underlying live page table, the time window covered by that precaution isn't large enough.","status":"published","published":"2024-01-05T17:15:00Z","modified":"2026-10-17T12:57:20.003142303Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:21.882004Z"},{"id":"openSUSE-SU-2024:13257-1","title":"xen-4.17.2_04-1.1 on GA media","description":"These are all security issues fixed in the xen-4.17.2_04-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:14:37.950158Z","updated_at":"2026-11-02T16:58:36.025801Z"},{"id":"SUSE-SU-2023:3831-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2023-20588: Fixed AMD CPU transitional execution leak via division by zero (XSA-439) (bsc#1215474).\n- CVE-2023-34322: Fixed top-level shadow reference dropped too early for 64-bit PV guests (XSA-438) (bsc#1215145).\n","status":"published","published":"2023-09-27T17:15:27Z","modified":"2026-02-04T02:13:16.729766Z","updated_at":"2026-11-02T15:53:53.440387Z"},{"id":"SUSE-SU-2023:3832-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2023-20588: Fixed AMD CPU transitional execution leak via division by zero (XSA-439) (bsc#1215474).\n- CVE-2023-34322: Fixed top-level shadow reference dropped too early for 64-bit PV guests (XSA-438) (bsc#1215145).\n","status":"published","published":"2023-09-27T17:16:03Z","modified":"2026-02-04T02:34:02.673314Z","updated_at":"2026-11-02T15:53:53.440387Z"},{"id":"SUSE-SU-2023:3894-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2023-20588: Fixed AMD CPU transitional execution leak via division by zero (XSA-439) (bsc#1215474).\n- CVE-2023-34322: Fixed top-level shadow reference dropped too early for 64-bit PV guests (XSA-438) (bsc#1215145).\n- CVE-2023-20593: Fixed AMD Zenbleed (XSA-433) (bsc#1213616).\n- CVE-2022-40982: Fixed Intel Gather Data Sampling (XSA-435) (bsc#1214083).\n","status":"published","published":"2023-09-29T08:36:25Z","modified":"2026-02-04T03:29:12.706142Z","updated_at":"2026-11-02T15:53:53.440387Z"},{"id":"SUSE-SU-2023:3895-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2023-20588: Fixed AMD CPU transitional execution leak via division by zero (XSA-439) (bsc#1215474).\n- CVE-2023-34322: Fixed top-level shadow reference dropped too early for 64-bit PV guests (XSA-438) (bsc#1215145).\n- CVE-2023-20593: Fixed AMD Zenbleed (XSA-433) (bsc#1213616).\n- CVE-2022-40982: Fixed Intel Gather Data Sampling (XSA-435) (bsc#1214083).\n","status":"published","published":"2023-09-29T08:59:54Z","modified":"2026-02-04T02:42:19.716307Z","updated_at":"2026-11-02T15:53:53.440387Z"},{"id":"SUSE-SU-2023:3902-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2023-20588: Fixed AMD CPU transitional execution leak via division by zero (XSA-439) (bsc#1215474).\n- CVE-2023-34322: Fixed top-level shadow reference dropped too early for 64-bit PV guests (XSA-438) (bsc#1215145).\n- CVE-2023-20593: Fixed AMD Zenbleed (XSA-433) (bsc#1213616).\n- CVE-2022-40982: Fixed Intel Gather Data Sampling (XSA-435) (bsc#1214083).\n","status":"published","published":"2023-09-29T13:10:32Z","modified":"2025-05-02T04:33:37.437251Z","updated_at":"2026-11-02T15:53:53.440387Z"},{"id":"SUSE-SU-2023:3903-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2023-20588: Fixed AMD CPU transitional execution leak via division by zero (XSA-439) (bsc#1215474).\n- CVE-2023-34322: Fixed top-level shadow reference dropped too early for 64-bit PV guests (XSA-438) (bsc#1215145).\n- CVE-2023-20593: Fixed AMD Zenbleed (XSA-433) (bsc#1213616).\n","status":"published","published":"2023-09-29T13:14:27Z","modified":"2025-05-02T04:34:26.995564Z","updated_at":"2026-11-02T15:53:53.440387Z"},{"id":"SUSE-SU-2023:4475-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2023-20588: AMD CPU transitional execution leak via division by zero (XSA-439) (bsc#1215474).\n- CVE-2023-34322: top-level shadow reference dropped too early for 64-bit PV guests (XSA-438) (bsc#1215145).\n- CVE-2023-34325: Multiple vulnerabilities in libfsimage disk handling (XSA-443) (bsc#1215747).\n- CVE-2023-34326: x86/AMD: missing IOMMU TLB flushing (XSA-442) (bsc#1215746).\n- CVE-2023-34327,CVE-2023-34328: x86/AMD: Debug Mask handling (XSA-444) (bsc#1215748).\n- CVE-2023-46835: x86/AMD: mismatch in IOMMU quarantine page table levels (XSA-445) (bsc#1216654).\n- CVE-2023-46836: x86: BTC/SRSO fixes not fully effective (XSA-446) (bsc#1216807).\n\n- Upstream bug fixes (bsc#1027519)\n","status":"published","published":"2023-11-17T07:05:29Z","modified":"2026-02-04T02:57:55.595655Z","updated_at":"2026-11-02T15:53:53.865042Z"},{"id":"SUSE-SU-2023:4476-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2023-20588: AMD CPU transitional execution leak via division by zero (XSA-439) (bsc#1215474).\n- CVE-2023-34322: top-level shadow reference dropped too early for 64-bit PV guests (XSA-438) (bsc#1215145).\n- CVE-2023-34325: Multiple vulnerabilities in libfsimage disk handling (XSA-443) (bsc#1215747).\n- CVE-2023-34326: x86/AMD: missing IOMMU TLB flushing (XSA-442) (bsc#1215746).\n- CVE-2023-34327,CVE-2023-34328: x86/AMD: Debug Mask handling (XSA-444) (bsc#1215748).\n- CVE-2023-46835: x86/AMD: mismatch in IOMMU quarantine page table levels (XSA-445) (bsc#1216654).\n- CVE-2023-46836: x86: BTC/SRSO fixes not fully effective (XSA-446) (bsc#1216807). \n\n- Upstream bug fixes (bsc#1027519) \n","status":"published","published":"2023-11-17T07:05:47Z","modified":"2026-02-04T03:22:05.228354Z","updated_at":"2026-11-02T15:53:53.865042Z"}]}}