{"id":"CVE-2024-31146","aliases":["DEBIAN-CVE-2024-31146","DSA-5836-1","EUVD-2024-29056","GHSA-hrw6-9556-27w2","MGASA-2025-0270","SUSE-SU-2024:2994-1","SUSE-SU-2024:3001-1","SUSE-SU-2024:3010-1","SUSE-SU-2024:3075-1","SUSE-SU-2024:3113-1","SUSE-SU-2024:3423-1","SUSE-SU-2024:3586-1","UBUNTU-CVE-2024-31146","openSUSE-SU-2024:14283-1"],"status":"published","title":"PCI device pass-through with shared resources","description":"When multiple devices share resources and one of them is to be passed\nthrough to a guest, security of the entire system and of respective\nguests individually cannot really be guaranteed without knowing\ninternals of any of the involved guests.  Therefore such a configuration\ncannot really be security-supported, yet making that explicit was so far\nmissing.\n\nResources the sharing of which is known to be problematic include, but\nare not limited to\n- - PCI Base Address Registers (BARs) of multiple devices mapping to the\n  same page (4k on x86),\n- - INTx lines.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00235,"percentile":0.14638,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2024-08-20T00:00:00Z","modified":"2026-11-02T12:01:50Z","fixes":[{"ecosystem":"Debian:12","package":"xen","fixed_in":["4.17.5+23-ga4e5191dc0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"xen","fixed_in":["4.19.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"xen","fixed_in":["4.19.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.17.5+23-ga4e5191dc0-1"}]}],"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"]},{"source":"osv","ecosystem":"Debian:13","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.19.1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.19.1-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.17.5+23-ga4e5191dc0-1"}]}],"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"],"bundled":12},{"source":"osv","ecosystem":"Mageia:9","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.17.5-1.git20251028.1.mga9"}]}],"bundled":26},{"source":"osv","ecosystem":"SUSE:Linux 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device pass-through with shared resources","description":"When multiple devices share resources and one of them is to be passed\nthrough to a guest, security of the entire system and of respective\nguests individually cannot really be guaranteed without knowing\ninternals of any of the involved guests.  Therefore such a configuration\ncannot really be security-supported, yet making that explicit was so far\nmissing.\n\nResources the sharing of which is known to be problematic include, but\nare not limited to\n- - PCI Base Address Registers (BARs) of multiple devices mapping to the\n  same page (4k on x86),\n- - INTx lines.","status":"published","published":"2024-09-25T10:31:51.154Z","modified":"2024-09-25T13:24:47.409Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:34:14.308905Z"}],"euvd":[{"id":"EUVD-2024-29056","description":"When multiple devices share resources and one of them is to be passed\nthrough to a guest, security of the entire system and of respective\nguests individually cannot really be guaranteed without knowing\ninternals of any of the involved guests.  Therefore such a configuration\ncannot really be security-supported, yet making that explicit was so far\nmissing.\n\nResources the sharing of which is known to be problematic include, but\nare not limited to\n- - PCI Base Address Registers (BARs) of multiple devices mapping to the\n  same page (4k on x86),\n- - INTx lines.","status":"published","published":"2024-09-25T10:31:51Z","modified":"2024-09-25T13:24:47Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:28:12.924195Z"}],"ghsa":[{"id":"GHSA-hrw6-9556-27w2","title":"When multiple devices share resources and one of them is to be passed\nthrough to a guest,...","description":"When multiple devices share resources and one of them is to be passed\nthrough to a guest, security of the entire system and of respective\nguests individually cannot really be guaranteed without knowing\ninternals of any of the involved guests.  Therefore such a configuration\ncannot really be security-supported, yet making that explicit was so far\nmissing.\n\nResources the sharing of which is known to be problematic include, but\nare not limited to\n- - PCI Base Address Registers (BARs) of multiple devices mapping to the\n  same page (4k on x86),\n- - INTx lines.","status":"published","published":"2024-09-25T12:30:40Z","modified":"2026-01-05T21:31:32Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:05:29.894873Z"}],"nvd":[{"id":"CVE-2024-31146","description":"When multiple devices share resources and one of them is to be passed\nthrough to a guest, security of the entire system and of respective\nguests individually cannot really be guaranteed without knowing\ninternals of any of the involved guests.  Therefore such a configuration\ncannot really be security-supported, yet making that explicit was so far\nmissing.\n\nResources the sharing of which is known to be problematic include, but\nare not limited to\n- - PCI Base Address Registers (BARs) of multiple devices mapping to the\n  same page (4k on x86),\n- - INTx lines.","status":"published","published":"2024-09-25T11:15:12.22Z","modified":"2026-06-17T07:27:52.223Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:10:29.044588Z"}],"osv":[{"id":"DEBIAN-CVE-2024-31146","description":"When multiple devices share resources and one of them is to be passed through to a guest, security of the entire system and of respective guests individually cannot really be guaranteed without knowing internals of any of the involved guests.  Therefore such a configuration cannot really be security-supported, yet making that explicit was so far missing.  Resources the sharing of which is known to be problematic include, but are not limited to - - PCI Base Address Registers (BARs) of multiple devices mapping to the   same page (4k on x86), - - INTx lines.","status":"published","published":"2024-09-25T11:15:12.22Z","modified":"2026-11-02T12:01:50.856605419Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:42.530184Z"},{"id":"UBUNTU-CVE-2024-31146","description":"When multiple devices share resources and one of them is to be passed through to a guest, security of the entire system and of respective guests individually cannot really be guaranteed without knowing internals of any of the involved guests.  Therefore such a configuration cannot really be security-supported, yet making that explicit was so far missing. Resources the sharing of which is known to be problematic include, but are not limited to - - PCI Base Address Registers (BARs) of multiple devices mapping to the   same page (4k on x86), - - INTx lines.","status":"published","published":"2024-09-25T11:15:00Z","modified":"2026-10-17T12:56:44.698112494Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:48.333535Z"},{"id":"CVE-2024-31146","description":"When multiple devices share resources and one of them is to be passed\nthrough to a guest, security of the entire system and of respective\nguests individually cannot really be guaranteed without knowing\ninternals of any of the involved guests.  Therefore such a configuration\ncannot really be security-supported, yet making that explicit was so far\nmissing.\n\nResources the sharing of which is known to be problematic include, but\nare not limited to\n- - PCI Base Address Registers (BARs) of multiple devices mapping to the\n  same page (4k on x86),\n- - INTx lines.","status":"published","published":"2024-09-25T11:15:12Z","modified":"2026-04-16T04:35:55.982513916Z","updated_at":"2026-11-02T15:44:40.06138Z"},{"id":"DSA-5836-1","title":"xen - security update","status":"published","published":"2024-12-26T00:00:00Z","modified":"2026-03-09T02:09:38.185872Z","updated_at":"2026-11-02T15:46:17.892347Z"},{"id":"MGASA-2025-0270","title":"Updated xen packages fix security vulnerabilities","description":"Double unlock in x86 guest IRQ handling. (CVE-2024-31143)\nXapi: Metadata injection attack against backup/restore functionality.\n(CVE-2024-31144)\nError handling in x86 IOMMU identity mapping. (CVE-2024-31145)\nPCI device pass-through with shared resources. (CVE-2024-31146)\nx86: Deadlock in vlapic_error(). (CVE-2024-45817)\nDeadlock in x86 HVM standard VGA handling. (CVE-2024-45818)\nlibxl leaks data to PVH guests via ACPI tables. (CVE-2024-45819)\nBackend can crash Linux netfront. (CVE-2024-53240)\nXen hypercall page unsafe against speculative attacks. (CVE-2024-53241)\nDeadlock potential with VT-d and legacy PCI device pass-through.\n(CVE-2025-1713)\nx86: Indirect Target Selection. (CVE-2024-28956)\nx86: Incorrect stubs exception handling for flags recovery.\n(CVE-2025-27465)\nTSA-SQ (TSA in the Store Queues). (CVE-2024-36350)\nTSA-L1 (TSA in the L1 data cache). (CVE-2024-36357)\nA NULL pointer dereference in the updating of the reference TSC area.\n(CVE-2025-27466)\nA NULL pointer dereference by assuming the SIM page is mapped when a\nsynthetic timer message has to be delivered. (CVE-2025-58142)\nA race in the mapping of the reference TSC page, where a guest can get\nXen to free a page while still present in the guest physical to machine\n(p2m) page tables. (CVE-2025-58143)\nAn assertion is wrong there, where the case actually needs handling.  A\nNULL pointer de-reference could result on a release build.\n(CVE-2025-58144)\nThe P2M lock isn't held until a page reference was actually obtained (or\nthe attempt to do so has failed).  Otherwise the page can not only\nchange type, but even ownership in between, thus allowing domain\nboundaries to be violated. (CVE-2025-58145)\nXAPI UTF-8 string handling. (CVE-2025-58146)\nHypercalls using the HV_VP_SET Sparse format can cause vpmask_set() to\nwrite out of bounds when converting the bitmap to Xen's format.\n(CVE-2025-58147)\nHypercalls using any input format can cause send_ipi() to read d-\u003evcpu[]\nout-of-bounds, and operate on a wild vCPU pointer.(CVE-2025-58148)\nIncorrect removal of permissions on PCI device unplug. (CVE-2025-58149)\n","status":"published","published":"2025-11-09T07:52:10Z","modified":"2026-04-16T04:42:58.080548709Z","updated_at":"2026-11-02T15:49:43.178336Z"},{"id":"openSUSE-SU-2024:14283-1","title":"xen-4.19.0_02-1.1 on GA media","description":"These are all security issues fixed in the xen-4.19.0_02-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-08-20T00:00:00Z","modified":"2026-02-04T03:18:08.530656Z","updated_at":"2026-11-02T16:58:36.662953Z"},{"id":"SUSE-SU-2024:2994-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2024-31145: Fixed error handling in x86 IOMMU identity mapping (XSA-460, bsc#1228574)\n- CVE-2024-31146: Fixed PCI device pass-through with shared resources (XSA-461, bsc#1228575)\n","status":"published","published":"2024-08-21T10:37:54Z","modified":"2026-02-04T03:31:40.104442Z","updated_at":"2026-11-02T15:53:55.136363Z"},{"id":"SUSE-SU-2024:3001-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2024-31145: Fixed error handling in x86 IOMMU identity mapping (XSA-460, bsc#1228574)\n- CVE-2024-31146: Fixed PCI device pass-through with shared resources (XSA-461, bsc#1228575)\n","status":"published","published":"2024-08-23T08:15:47Z","modified":"2026-02-04T04:38:40.278076Z","updated_at":"2026-11-02T15:53:55.136363Z"},{"id":"SUSE-SU-2024:3010-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n\n- CVE-2024-31145: Fixed error handling in x86 IOMMU identity mapping (XSA-460, bsc#1228574)\n- CVE-2024-31146: Fixed PCI device pass-through with shared resources (XSA-461, bsc#1228575)\n\nOther fixes:\n- Migrate CVE-2024-31143 patch in favor of upstream version (bsc#1227355)\n- Upstream bug fixes (bsc#1027519)\n","status":"published","published":"2024-08-26T09:52:00Z","modified":"2026-02-04T04:05:35.810507Z","updated_at":"2026-11-02T15:53:55.136363Z"},{"id":"SUSE-SU-2024:3075-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2024-31145: Fixed error handling in x86 IOMMU identity mapping (XSA-460, bsc#1228574)\n- CVE-2024-31146: Fixed PCI device pass-through with shared resources (XSA-461, bsc#1228575)\n\nOther fixes:\n- Update to Xen 4.17.5 security bug fix release (bsc#1027519)\n","status":"published","published":"2024-09-02T14:41:08Z","modified":"2026-02-04T02:44:53.442802Z","updated_at":"2026-11-02T15:53:55.136363Z"},{"id":"SUSE-SU-2024:3113-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n  \n- CVE-2024-31145: Fixed error handling in x86 IOMMU identity mapping (XSA-460, bsc#1228574)\n- CVE-2024-31146: Fixed PCI device pass-through with shared resources (XSA-461, bsc#1228575)\n\nOther fixes:\n- Update to Xen 4.18.3 security bug fix release (bsc#1027519)\n","status":"published","published":"2024-09-03T15:04:06Z","modified":"2026-02-04T03:15:41.286114Z","updated_at":"2026-11-02T15:53:55.136363Z"},{"id":"SUSE-SU-2024:3423-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\n- CVE-2024-2201: Mitigation for Native Branch History Injection (XSA-456, bsc#1222453)\n- CVE-2024-31143: Fixed double unlock in x86 guest IRQ handling (XSA-458, bsc#1227355)\n- CVE-2024-31145: Fixed error handling in x86 IOMMU identity mapping (XSA-460, bsc#1228574)\n- CVE-2024-31146: Fixed PCI device pass-through with shared resources (XSA-461, bsc#1228575)\n- CVE-2024-45817: Fixed a deadlock in vlapic_error (XSA-462, bsc#1230366)\n","status":"published","published":"2024-09-24T15:25:42Z","modified":"2026-02-04T02:20:21.015234Z","updated_at":"2026-11-02T15:53:55.639015Z"},{"id":"SUSE-SU-2024:3586-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\nSecurity fixes:\n\n- CVE-2024-31145: Fixed error handling in x86 IOMMU identity mapping (XSA-460) (bsc#1228574)\n- CVE-2024-31146: Fixed PCI device pass-through with shared resources (XSA-461) (bsc#1228575)\n- CVE-2024-45817: Fixed Deadlock in vlapic_error() (XSA-462) (bsc#1230366)\n\nOther fixes:\n\n- Upstream bug fixes (bsc#1027519)\n","status":"published","published":"2024-10-10T11:29:45Z","modified":"2026-02-04T02:48:43.904234Z","updated_at":"2026-11-02T15:53:55.639015Z"}]}}