{"id":"CVE-2017-17564","aliases":["ALPINE-CVE-2017-17564","DEBIAN-CVE-2017-17564","DLA-1230-1","DLA-1549-1","DSA-4112-1","EUVD-2017-8722","GHSA-32xh-h6c6-4hvr","SUSE-SU-2018:0438-1","SUSE-SU-2018:0472-1","SUSE-SU-2018:0601-1","SUSE-SU-2018:0609-1","SUSE-SU-2018:0638-1","SUSE-SU-2018:0678-1","UBUNTU-CVE-2017-17564"],"status":"published","title":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service...","description":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.","severity":{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00352,"percentile":0.29022,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-388"],"published":"2017-12-12T22:00:00Z","modified":"2026-09-01T20:03:45Z","fixes":[{"ecosystem":"Alpine:v3.4","package":"xen","fixed_in":["4.6.6-r3"],"sources":["osv"]},{"ecosystem":"Alpine:v3.5","package":"xen","fixed_in":["4.7.3-r5"],"sources":["osv"]},{"ecosystem":"Alpine:v3.6","package":"xen","fixed_in":["4.8.2-r5"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"xen","fixed_in":["4.8.3+comet2+shim4.10.0+comet3-1+deb9u5"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"xen","fixed_in":["4.8.3+comet2+shim4.10.0+comet3-1+deb9u5"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"xen","fixed_in":["4.8.3+comet2+shim4.10.0+comet3-1+deb9u5"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"xen","fixed_in":["4.9.2-0ubuntu1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.4","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.6-r3"}]}]},{"source":"osv","ecosystem":"Alpine:v3.5","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.3-r5"}]}]},{"source":"osv","ecosystem":"Alpine:v3.6","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.2-r5"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5"}]}]},{"source":"osv","ecosystem":"Debian:7","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.6.lts1-11"}]}],"versions":["4.1.4-3","4.1.4-3+deb7u1","4.1.4-3+deb7u2","4.1.4-3+deb7u3","4.1.4-3+deb7u4","4.1.4-3+deb7u5","4.1.4-3+deb7u6","4.1.4-3+deb7u7","4.1.4-3+deb7u8","4.1.4-3+deb7u9","4.1.4-4","4.1.6.1-1+deb7u1","4.1.6.lts1-1","4.1.6.lts1-10","4.1.6.lts1-2","4.1.6.lts1-3","4.1.6.lts1-4","4.1.6.lts1-5","4.1.6.lts1-6","4.1.6.lts1-7","4.1.6.lts1-8","4.1.6.lts1-9"],"bundled":6},{"source":"osv","ecosystem":"Debian:8","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.4lts2-0+deb8u1"}]}],"versions":["4.4.1-9","4.4.1-9+deb8u1","4.4.1-9+deb8u10","4.4.1-9+deb8u2","4.4.1-9+deb8u3","4.4.1-9+deb8u4","4.4.1-9+deb8u5","4.4.1-9+deb8u6","4.4.1-9+deb8u7","4.4.1-9+deb8u8","4.4.1-9+deb8u9","4.4.4lts1-0+deb8u1"],"bundled":14},{"source":"osv","ecosystem":"Debian:9","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.3+comet2+shim4.10.0+comet3-1+deb9u4.1"}]}],"versions":["4.8.1-1+deb9u1","4.8.1-1+deb9u2","4.8.1-1+deb9u3","4.8.2+xsa245-0+deb9u1","4.8.3+comet2+shim4.10.0+comet3-1+deb9u4"],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux 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SP3","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.5_21-45.19.1"}]}],"bundled":14},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 11 SP3-LTSS","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.5_21-45.19.1"}]}],"bundled":14},{"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"},{"fixed":"4.9.2-0ubuntu1"}]}],"versions":["4.9.0-0ubuntu3","4.9.0-0ubuntu4"]}],"products":[{"vendor":"xen","product":"xen"}],"references":[{"url":"https://xenbits.xen.org/xsa/advisory-250.html","tags":["x_refsource_CONFIRM","x_transferred","Mitigation","Patch","Vendor Advisory","fix","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/01/msg00003.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/102172","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/201801-14","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"http://www.securitytracker.com/id/1040770","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2017/12/12/3","tags":["x_refsource_CONFIRM","x_transferred","Mailing List","article","report"]},{"url":"https://www.debian.org/security/2018/dsa-4112","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://support.citrix.com/article/CTX232096","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-17564"},{"url":"https://github.com/advisories/GHSA-32xh-h6c6-4hvr"},{"url":"https://security.alpinelinux.org/vuln/CVE-2017-17564","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-17564","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20180438-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1027519","tags":["report"]},{"url":"https://bugzilla.suse.com/1035442","tags":["report"]},{"url":"https://bugzilla.suse.com/1051729","tags":["report"]},{"url":"https://bugzilla.suse.com/1061081","tags":["report"]},{"url":"https://bugzilla.suse.com/1067317","tags":["report"]},{"url":"https://bugzilla.suse.com/1068032","tags":["report"]},{"url":"https://bugzilla.suse.com/1070158","tags":["report"]},{"url":"https://bugzilla.suse.com/1070159","tags":["report"]},{"url":"https://bugzilla.suse.com/1070160","tags":["report"]},{"url":"https://bugzilla.suse.com/1070163","tags":["report"]},{"url":"https://bugzilla.suse.com/1074562","tags":["report"]},{"url":"https://bugzilla.suse.com/1076116","tags":["report"]},{"url":"https://bugzilla.suse.com/1076180","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2017-15595","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-17563","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-17564","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-17565","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-17566","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-18030","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-5715","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-5753","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-5754","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-5683","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20180472-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20180601-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1080635","tags":["report"]},{"url":"https://bugzilla.suse.com/1080662","tags":["report"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20180609-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20180638-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1031382","tags":["report"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20180678-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1024307","tags":["report"]},{"url":"https://bugzilla.suse.com/1030144","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2017-11334","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-5898","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-7540","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-7541","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2017-17564","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-17564","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-17564","description":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.","status":"published","published":"2017-12-12T22:00:00Z","modified":"2024-08-05T20:51:32.379Z","updated_at":"2026-11-02T14:33:18.248329Z"}],"euvd":[{"id":"EUVD-2017-8722","description":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.","status":"published","published":"2017-12-12T22:00:00Z","modified":"2024-08-05T20:51:32Z","updated_at":"2026-11-03T02:23:09.524502Z"}],"ghsa":[{"id":"GHSA-32xh-h6c6-4hvr","title":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service...","description":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.","status":"published","published":"2022-05-14T02:20:17Z","modified":"2023-02-02T05:05:58Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T14:52:12.693005Z"}],"nvd":[{"id":"CVE-2017-17564","description":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.","status":"published","published":"2017-12-12T23:29:00.423Z","modified":"2026-06-17T01:11:16.313Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-388"],"updated_at":"2026-11-02T14:04:10.156892Z"}],"osv":[{"id":"ALPINE-CVE-2017-17564","description":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.","status":"published","published":"2017-12-12T23:29:00.423Z","modified":"2026-06-15T18:24:58.223153232Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:27:46.716249Z"},{"id":"CVE-2017-17564","description":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.","status":"published","published":"2017-12-12T23:29:00.423Z","modified":"2026-03-15T22:15:31.969669Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:04.853379Z"},{"id":"DEBIAN-CVE-2017-17564","description":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.","status":"published","published":"2017-12-12T23:29:00.423Z","modified":"2026-09-01T20:03:45.830245142Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:29.100767Z"},{"id":"UBUNTU-CVE-2017-17564","description":"An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.","status":"published","published":"2017-12-12T23:29:00Z","modified":"2026-04-22T11:21:05.077642Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:14.977781Z"},{"id":"DLA-1230-1","title":"xen - security update","status":"published","published":"2018-01-04T00:00:00Z","modified":"2026-03-09T01:02:04.057946Z","updated_at":"2026-11-02T15:46:09.336894Z"},{"id":"DLA-1549-1","title":"xen - security update","status":"published","published":"2018-10-18T00:00:00Z","modified":"2026-03-09T01:22:16.03483Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DSA-4112-1","title":"xen - security update","status":"published","published":"2018-02-14T00:00:00Z","modified":"2026-03-09T01:19:06.558676Z","updated_at":"2026-11-02T15:46:16.523846Z"},{"id":"SUSE-SU-2018:0438-1","title":"Security update for xen","description":"This update for xen fixes several issues.\n\nThese security issues were fixed:\n\n- CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via\n  side effects of speculative execution, aka 'Spectre' and 'Meltdown' attacks\n  (bsc#1074562, bsc#1068032)\n- CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded\n  recursion, stack consumption, and hypervisor crash) or possibly gain privileges\n  via crafted page-table stacking (bsc#1061081)\n- CVE-2017-17566: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) or gain host OS privileges in shadow mode by mapping a certain\n  auxiliary page (bsc#1070158).\n- CVE-2017-17563: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging an incorrect mask for\n  reference-count overflow checking in shadow mode (bsc#1070159).\n- CVE-2017-17564: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging incorrect error handling for\n  reference counting in shadow mode (bsc#1070160).\n- CVE-2017-17565: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) if shadow mode and log-dirty mode are in place, because of an\n  incorrect assertion related to M2P (bsc#1070163).\n- CVE-2018-5683: The vga_draw_text function allowed local OS guest privileged\n  users to cause a denial of service (out-of-bounds read and QEMU process crash)\n  by leveraging improper memory address validation (bsc#1076116).\n- CVE-2017-18030: The cirrus_invalidate_region function allowed local OS guest\n  privileged users to cause a denial of service (out-of-bounds array access and\n  QEMU process crash) via vectors related to negative pitch (bsc#1076180).\n\nThese non-security issues were fixed:\n\n- bsc#1067317: pass cache=writeback|unsafe|directsync to qemu depending on the\n  libxl disk settings\n- bsc#1051729: Prevent invalid symlinks after install of SLES 12 SP2\n- bsc#1035442: Increased the value of LIBXL_DESTROY_TIMEOUT from 10 to 100\n  seconds. If many domUs shutdown in parallel the backends couldn't keep up \n- bsc#1027519: Added several upstream patches\n  ","status":"published","published":"2018-02-14T09:58:26Z","modified":"2025-05-02T04:06:29.72509Z","updated_at":"2026-11-02T15:53:44.594517Z"},{"id":"SUSE-SU-2018:0472-1","title":"Security update for xen","description":"This update for xen fixes several issues.\n\nThese security issues were fixed:\n\n- CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via\n  side effects of speculative execution, aka 'Spectre' and 'Meltdown' attacks\n  (bsc#1074562, bsc#1068032)\n- CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded\n  recursion, stack consumption, and hypervisor crash) or possibly gain privileges\n  via crafted page-table stacking (bsc#1061081)\n- CVE-2017-17566: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) or gain host OS privileges in shadow mode by mapping a certain\n  auxiliary page (bsc#1070158).\n- CVE-2017-17563: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging an incorrect mask for\n  reference-count overflow checking in shadow mode (bsc#1070159).\n- CVE-2017-17564: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging incorrect error handling for\n  reference counting in shadow mode (bsc#1070160).\n- CVE-2017-17565: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) if shadow mode and log-dirty mode are in place, because of an\n  incorrect assertion related to M2P (bsc#1070163).\n- CVE-2018-5683: The vga_draw_text function allowed local OS guest privileged\n  users to cause a denial of service (out-of-bounds read and QEMU process crash)\n  by leveraging improper memory address validation (bsc#1076116).\n- CVE-2017-18030: The cirrus_invalidate_region function allowed local OS guest\n  privileged users to cause a denial of service (out-of-bounds array access and\n  QEMU process crash) via vectors related to negative pitch (bsc#1076180).\n\nThese non-security issues were fixed:\n\n- bsc#1051729: Prevent invalid symlinks after install of SLES 12 SP2\n- bsc#1035442: Increased the value of LIBXL_DESTROY_TIMEOUT from 10 to 100\n  seconds. If many domUs shutdown in parallel the backends couldn't keep up\n- bsc#1027519: Added several upstream patches\n","status":"published","published":"2018-02-19T09:15:16Z","modified":"2026-02-04T04:12:13.460982Z","updated_at":"2026-11-02T15:53:44.594517Z"},{"id":"SUSE-SU-2018:0601-1","title":"Security update for xen","description":"This update for xen fixes several issues.\n\nThese security issues were fixed:\n\n- CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via\n  side effects of speculative execution, aka 'Spectre' and 'Meltdown' attacks\n  (bsc#1074562, bsc#1068032)\n- CVE-2018-5683: The vga_draw_text function allowed local OS guest privileged\n  users to cause a denial of service (out-of-bounds read and QEMU process crash)\n  by leveraging improper memory address validation (bsc#1076116).\n- CVE-2017-18030: The cirrus_invalidate_region function allowed local OS guest\n  privileged users to cause a denial of service (out-of-bounds array access and\n  QEMU process crash) via vectors related to negative pitch (bsc#1076180).\n- CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded\n  recursion, stack consumption, and hypervisor crash) or possibly gain privileges\n  via crafted page-table stacking (bsc#1061081)\n- CVE-2017-17566: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) or gain host OS privileges in shadow mode by mapping a certain\n  auxiliary page (bsc#1070158).\n- CVE-2017-17563: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging an incorrect mask for\n  reference-count overflow checking in shadow mode (bsc#1070159).\n- CVE-2017-17564: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging incorrect error handling for\n  reference counting in shadow mode (bsc#1070160).\n- CVE-2017-17565: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) if shadow mode and log-dirty mode are in place, because of an\n  incorrect assertion related to M2P (bsc#1070163).\n- Added missing intermediate preemption checks for guest requesting removal of\n  memory. This allowed malicious guest administrator to cause denial of service\n  due to the high cost of this operation (bsc#1080635).\n- Because of XEN not returning the proper error messages when transitioning\n  grant tables from v2 to v1 a malicious guest was able to cause DoS or\n  potentially allowed for privilege escalation as well as information leaks\n  (bsc#1080662).\n\nThis non-security issue was fixed:\n\n- bsc#1035442: Increased the value of LIBXL_DESTROY_TIMEOUT from 10 to 100\n  seconds. If many domUs shutdown in parallel the backends couldn't keep up\n\n- Upstream patches from Jan (bsc#1027519)\n","status":"published","published":"2018-03-05T09:40:56Z","modified":"2026-02-04T03:27:03.806103Z","updated_at":"2026-11-02T15:53:44.594517Z"},{"id":"SUSE-SU-2018:0609-1","title":"Security update for xen","description":"This update for xen fixes several issues.\n\nThese security issues were fixed:\n\n- CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via\n  side effects of speculative execution, aka 'Spectre' and 'Meltdown' attacks\n  (bsc#1074562, bsc#1068032)\n- CVE-2018-5683: The vga_draw_text function allowed local OS guest privileged\n  users to cause a denial of service (out-of-bounds read and QEMU process crash)\n  by leveraging improper memory address validation (bsc#1076116).\n- CVE-2017-18030: The cirrus_invalidate_region function allowed local OS guest\n  privileged users to cause a denial of service (out-of-bounds array access and\n  QEMU process crash) via vectors related to negative pitch (bsc#1076180).\n- CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded\n  recursion, stack consumption, and hypervisor crash) or possibly gain privileges\n  via crafted page-table stacking (bsc#1061081)\n- CVE-2017-17566: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) or gain host OS privileges in shadow mode by mapping a certain\n  auxiliary page (bsc#1070158).\n- CVE-2017-17563: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging an incorrect mask for\n  reference-count overflow checking in shadow mode (bsc#1070159).\n- CVE-2017-17564: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging incorrect error handling for\n  reference counting in shadow mode (bsc#1070160).\n- CVE-2017-17565: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) if shadow mode and log-dirty mode are in place, because of an\n  incorrect assertion related to M2P (bsc#1070163).\n- Added missing intermediate preemption checks for guest requesting removal of\n  memory. This allowed malicious guest administrator to cause denial of service\n  due to the high cost of this operation (bsc#1080635).\n- Because of XEN not returning the proper error messages when transitioning\n  grant tables from v2 to v1 a malicious guest was able to cause DoS or\n  potentially allowed for privilege escalation as well as information leaks\n  (bsc#1080662).\n\nThis non-security issue was fixed:\n\n- bsc#1035442: Increased the value of LIBXL_DESTROY_TIMEOUT from 10 to 100\n  seconds. If many domUs shutdown in parallel the backends couldn't keep up\n","status":"published","published":"2018-03-05T16:46:43Z","modified":"2026-02-04T03:00:50.759468Z","updated_at":"2026-11-02T15:53:44.594517Z"},{"id":"SUSE-SU-2018:0638-1","title":"Security update for xen","description":"This update for xen fixes several issues.\n\nThis new feature was included:\n\n- add script and sysv service to watch for vcpu online/offline events in a HVM domU\n\nThese security issues were fixed:\n\n- CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via\n  side effects of speculative execution, aka 'Spectre' and 'Meltdown' attacks\n  (bsc#1074562, bsc#1068032)\n- CVE-2018-5683: The vga_draw_text function allowed local OS guest privileged\n  users to cause a denial of service (out-of-bounds read and QEMU process crash)\n  by leveraging improper memory address validation (bsc#1076116).\n- CVE-2017-18030: The cirrus_invalidate_region function allowed local OS guest\n  privileged users to cause a denial of service (out-of-bounds array access and\n  QEMU process crash) via vectors related to negative pitch (bsc#1076180).\n- CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded\n  recursion, stack consumption, and hypervisor crash) or possibly gain privileges\n  via crafted page-table stacking (bsc#1061081)\n- CVE-2017-17566: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) or gain host OS privileges in shadow mode by mapping a certain\n  auxiliary page (bsc#1070158).\n- CVE-2017-17563: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging an incorrect mask for\n  reference-count overflow checking in shadow mode (bsc#1070159).\n- CVE-2017-17564: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging incorrect error handling for\n  reference counting in shadow mode (bsc#1070160).\n- CVE-2017-17565: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) if shadow mode and log-dirty mode are in place, because of an\n  incorrect assertion related to M2P (bsc#1070163).\n- Added missing intermediate preemption checks for guest requesting removal of\n  memory. This allowed malicious guest administrator to cause denial of service\n  due to the high cost of this operation (bsc#1080635).\n- Because of XEN not returning the proper error messages when transitioning\n  grant tables from v2 to v1 a malicious guest was able to cause DoS or\n  potentially allowed for privilege escalation as well as information leaks\n  (bsc#1080662).\n\nThese non-security issues were fixed:\n\n- bsc#1035442: Increased the value of LIBXL_DESTROY_TIMEOUT from 10 to 100\n  seconds. If many domUs shutdown in parallel the backends couldn't keep up\n- bsc#1031382: Prevent VMs from crashing when migrating between dom0 hosts in\n  case read() returns zero on the receiver side.\n","status":"published","published":"2018-03-08T17:07:37Z","modified":"2026-02-04T03:19:59.97033Z","updated_at":"2026-11-02T15:53:44.594517Z"},{"id":"SUSE-SU-2018:0678-1","title":"Security update for xen","description":"This update for xen fixes several issues.\n\nThese security issues were fixed:\n\n- CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via\n  side effects of speculative execution, aka 'Spectre' and 'Meltdown' attacks\n  (bsc#1074562, bsc#1068032)\n- CVE-2018-5683: The vga_draw_text function allowed local OS guest privileged\n  users to cause a denial of service (out-of-bounds read and QEMU process crash)\n  by leveraging improper memory address validation (bsc#1076116).\n- CVE-2017-18030: The cirrus_invalidate_region function allowed local OS guest\n  privileged users to cause a denial of service (out-of-bounds array access and\n  QEMU process crash) via vectors related to negative pitch (bsc#1076180).\n- CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded\n  recursion, stack consumption, and hypervisor crash) or possibly gain privileges\n  via crafted page-table stacking (bsc#1061081)\n- CVE-2017-17566: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) or gain host OS privileges in shadow mode by mapping a certain\n  auxiliary page (bsc#1070158).\n- CVE-2017-17563: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging an incorrect mask for\n  reference-count overflow checking in shadow mode (bsc#1070159).\n- CVE-2017-17564: Prevent guest OS users to cause a denial of service (host OS\n  crash) or gain host OS privileges by leveraging incorrect error handling for\n  reference counting in shadow mode (bsc#1070160).\n- CVE-2017-17565: Prevent PV guest OS users to cause a denial of service (host\n  OS crash) if shadow mode and log-dirty mode are in place, because of an\n  incorrect assertion related to M2P (bsc#1070163).\n- Added missing intermediate preemption checks for guest requesting removal of\n  memory. This allowed malicious guest administrator to cause denial of service\n  due to the high cost of this operation (bsc#1080635).\n- Because of XEN not returning the proper error messages when transitioning\n  grant tables from v2 to v1 a malicious guest was able to cause DoS or\n  potentially allowed for privilege escalation as well as information leaks\n  (bsc#1080662).\n- CVE-2017-5898: The CCID Card device emulator support was vulnerable to an\n  integer overflow flaw allowing a privileged user to crash the Qemu process on\n  the host resulting in DoS (bsc#1024307)\n- Unprivileged domains could have issued well-timed writes to xenstore which\n  conflict with transactions to stall progress of the control domain or driver\n  domain, possibly leading to DoS (bsc#1030144, XSA-206).\n","status":"published","published":"2018-03-14T17:37:06Z","modified":"2026-02-04T03:15:35.836035Z","updated_at":"2026-11-02T15:53:44.594517Z"}]}}