{"id":"CVE-2018-19963","aliases":["ALPINE-CVE-2018-19963","DEBIAN-CVE-2018-19963","EUVD-2018-11633","GHSA-fxvq-f6w2-c6gp","SUSE-SU-2019:0003-1","openSUSE-SU-2024:11520-1"],"status":"published","title":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service ...","description":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was 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Enterprise Desktop 12 SP4","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.11.1_02-2.3.1"}]}],"bundled":11},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP4","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.11.1_02-2.3.1"}]}],"bundled":11},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP4","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.11.1_02-2.3.1"}]}],"bundled":11},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP4","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.11.1_02-2.3.1"}]}],"bundled":11},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.1_01-1.2"}]}],"bundled":93}],"products":[{"vendor":"xen","product":"xen"}],"references":[{"url":"https://xenbits.xen.org/xsa/advisory-276.html","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"http://www.securityfocus.com/bid/106182","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-19963"},{"url":"https://github.com/advisories/GHSA-fxvq-f6w2-c6gp"},{"url":"https://security.alpinelinux.org/vuln/CVE-2018-19963","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-19963","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20190003-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1027519","tags":["report"]},{"url":"https://bugzilla.suse.com/1108940","tags":["report"]},{"url":"https://bugzilla.suse.com/1111014","tags":["report"]},{"url":"https://bugzilla.suse.com/1114405","tags":["report"]},{"url":"https://bugzilla.suse.com/1114423","tags":["report"]},{"url":"https://bugzilla.suse.com/1114988","tags":["report"]},{"url":"https://bugzilla.suse.com/1115040","tags":["report"]},{"url":"https://bugzilla.suse.com/1115043","tags":["report"]},{"url":"https://bugzilla.suse.com/1115044","tags":["report"]},{"url":"https://bugzilla.suse.com/1115045","tags":["report"]},{"url":"https://bugzilla.suse.com/1115047","tags":["report"]},{"url":"https://bugzilla.suse.com/1117756","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2018-17963","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-18849","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-18883","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19665","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19961","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19962","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19963","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19964","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19965","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19966","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19967","tags":["web"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2007-1320","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-1366","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-3919","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-10013","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-10024","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-10025","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-7777","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-7908","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-7909","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-8667","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-8669","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-8910","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9377","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9379","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9381","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9382","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9383","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9384","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9385","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9386","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9637","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9921","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9932","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12135","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12136","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12137","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-2615","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-2620","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-5753","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-6505","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-8309","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-9330","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-10471","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-10472","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-10981","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-10982","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12126","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12891","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12892","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12893","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-15468","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-15469","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-15470","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-3639","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-3646","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-3665","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-5244","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://www.suse.com/security/cve/CVE-2018-7542","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-8897","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-17349","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-0543","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-11739","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-11740","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-11742","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-11743","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-15563","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-15565","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-15566","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-15567","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25595","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25596","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25597","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25598","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25599","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25600","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25601","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25602","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25603","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25604","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-27670","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-27671","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-27672","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-27674","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-28368","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29040","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29480","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29481","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29483","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29484","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29566","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29567","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29570","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29571","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-28687","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-19963","description":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.","status":"published","published":"2018-12-08T04:00:00Z","modified":"2024-08-05T11:51:17.938Z","updated_at":"2026-11-02T14:35:03.288698Z"}],"euvd":[{"id":"EUVD-2018-11633","description":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.","status":"published","published":"2018-12-08T04:00:00Z","modified":"2024-08-05T11:51:17Z","updated_at":"2026-11-03T02:39:31.9745Z"}],"ghsa":[{"id":"GHSA-fxvq-f6w2-c6gp","title":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service ...","description":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.","status":"published","published":"2022-05-13T01:50:55Z","modified":"2023-02-02T05:01:55Z","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"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:51:17.99492Z"}],"nvd":[{"id":"CVE-2018-19963","description":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.","status":"published","published":"2018-12-08T04:29:00.327Z","modified":"2026-06-17T01:50:11.887Z","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-617"],"updated_at":"2026-11-02T14:04:49.995593Z"}],"osv":[{"id":"ALPINE-CVE-2018-19963","description":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.","status":"published","published":"2018-12-08T04:29:00.327Z","modified":"2026-10-23T17:17:55.240946128Z","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":"2026-11-02T15:27:47.187336Z"},{"id":"CVE-2018-19963","description":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.","status":"published","published":"2018-12-08T04:29:00.327Z","modified":"2026-03-14T09:28:50.072618Z","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":"2026-11-02T15:44:09.145458Z"},{"id":"DEBIAN-CVE-2018-19963","description":"An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.","status":"published","published":"2018-12-08T04:29:00.327Z","modified":"2026-10-23T18:03:56.387240592Z","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":"2026-11-02T15:45:30.57382Z"},{"id":"openSUSE-SU-2024:11520-1","title":"xen-4.15.1_01-1.2 on GA media","description":"These are all security issues fixed in the xen-4.15.1_01-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:08:22.378535Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"SUSE-SU-2019:0003-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- Update to Xen 4.11.1 bug fix release (bsc#1027519)\n\n- CVE-2018-17963: Fixed an integer overflow issue in the QEMU emulator, which\n  could occur when a packet with large packet size is processed. A user inside\n  a guest could have used this flaw to crash the qemu process resulting in a\n  Denial of Service (DoS). (bsc#1111014)\n- CVE-2018-18849: Fixed an out of bounds memory access in the LSI53C895A SCSI\n  host bus adapter emulation, which allowed a user and/or process to crash the\n  qemu process resulting in a Denial of Service (DoS). (bsc#1114423)\n- CVE-2018-18883: Fixed an issue related to inproper restriction of nested\n  VT-x, which allowed a guest to cause Xen to crash, resulting in a Denial of\n  Service (DoS). (XSA-278) (bsc#1114405)\n- CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB\n  flushing with AMD IOMMUs, which potentially allowed a guest to escalate its\n  privileges, may cause a Denial of Service (DoS) affecting the entire host, or\n  may be able to access data it is not supposed to access. (XSA-275)\n  (bsc#1115040)\n- CVE-2018-19963: Fixed the allocation of pages used to communicate with\n  external emulators, which may have cuased Xen to crash, resulting in a Denial\n  of Service (DoS). (XSA-276) (bsc#1115043)\n- CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case\n  non-canonical addresses are accessed, which may allow a guest to cause Xen to\n  crash, resulting in a Denial of Service (DoS) affecting the entire host.\n  (XSA-279) (bsc#1115045)\n- CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240, which\n  conflicted with shadow paging and allowed a guest to cause Xen to crash,\n  resulting in a Denial of Service (DoS) (XSA-280) (bsc#1115047)\n- CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host,\n  resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988)\n- CVE-2018-19964: Fixed the incorrect error handling of p2m page removals,\n  which allowed a guest to cause a deadlock, resulting in a Denial of Service\n  (DoS) affecting the entire host. (XSA-277) (bsc#1115044)\n- CVE-2018-19665: Fixed an integer overflow resulting in memory corruption in\n  various Bluetooth functions, allowing this to crash qemu process resulting in\n  Denial of Service (DoS). (bsc#1117756).\n\nOther bugs fixed:\n\n- Fixed an issue related to a domU hang on SLE12-SP3 HV (bsc#1108940)\n\n","status":"published","published":"2019-01-02T10:39:50Z","modified":"2026-02-04T04:40:34.890337Z","updated_at":"2026-11-02T15:53:45.926331Z"}]}}