{"id":"CVE-2025-58149","aliases":["ALPINE-CVE-2025-58149","DEBIAN-CVE-2025-58149","DSA-6068-1","EUVD-2025-37346","GHSA-38qg-7h9q-7h29","MGASA-2025-0270","SUSE-SU-2025:4419-1","SUSE-SU-2025:4490-1","SUSE-SU-2026:0012-1","SUSE-SU-2026:0303-1","SUSE-SU-2026:0328-1","SUSE-SU-2026:0394-1","UBUNTU-CVE-2025-58149","openSUSE-SU-2025:15719-1"],"status":"published","title":"Incorrect removal of permissions on PCI device unplug","description":"When passing through PCI devices, the detach logic in libxl won't remove\naccess permissions to any 64bit memory BARs the device might have.  As a\nresult a domain can still have access any 64bit memory BAR when such\ndevice is no longer assigned to the domain.\n\nFor PV domains the permission leak allows the domain itself to map the memory\nin the page-tables.  For HVM it would require a compromised device model or\nstubdomain to map the leaked memory into the HVM domain p2m.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00435,"percentile":0.38186,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-284","CWE-672"],"published":"2025-10-31T11:50:39Z","modified":"2026-10-23T17:47:47Z","fixes":[{"ecosystem":"Alpine:v3.19","package":"xen","fixed_in":["4.18.5-r3"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"xen","fixed_in":["4.18.5-r3"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"xen","fixed_in":["4.19.3-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"xen","fixed_in":["4.20.1-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"xen","fixed_in":["4.20.1-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"xen","fixed_in":["4.20.1-r2"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"xen","fixed_in":["4.17.5+72-g01140da4e8-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"xen","fixed_in":["4.20.2+7-g1badcf5035-0+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"xen","fixed_in":["4.20.2+7-g1badcf5035-1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux 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removal of permissions on PCI device unplug","description":"When passing through PCI devices, the detach logic in libxl won't remove\naccess permissions to any 64bit memory BARs the device might have.  As a\nresult a domain can still have access any 64bit memory BAR when such\ndevice is no longer assigned to the domain.\n\nFor PV domains the permission leak allows the domain itself to map the memory\nin the page-tables.  For HVM it would require a compromised device model or\nstubdomain to map the leaked memory into the HVM domain p2m.","status":"published","published":"2025-10-31T11:50:39.536Z","modified":"2025-11-04T21:13:31.524Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp"}],"cwes":["CWE-672"],"updated_at":"2026-11-02T14:32:37.027582Z"}],"euvd":[{"id":"EUVD-2025-37346","description":"When passing through PCI devices, the detach logic in libxl won't remove\naccess permissions to any 64bit memory BARs the device might have.  As a\nresult a domain can still have access any 64bit memory BAR when such\ndevice is no longer assigned to the domain.\n\nFor PV domains the permission leak allows the domain itself to map the memory\nin the page-tables.  For HVM it would require a compromised device model or\nstubdomain to map the leaked memory into the HVM domain p2m.","status":"published","published":"2025-10-31T11:50:39Z","modified":"2025-11-04T21:13:31Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T19:49:21.143143Z"}],"ghsa":[{"id":"GHSA-38qg-7h9q-7h29","title":"When passing through PCI devices, the detach logic in libxl won't remove\naccess permissions to...","description":"When passing through PCI devices, the detach logic in libxl won't remove\naccess permissions to any 64bit memory BARs the device might have.  As a\nresult a domain can still have access any 64bit memory BAR when such\ndevice is no longer assigned to the domain.\n\nFor PV domains the permission leak allows the domain itself to map the memory\nin the page-tables.  For HVM it would require a compromised device model or\nstubdomain to map the leaked memory into the HVM domain p2m.","status":"published","published":"2025-10-31T12:30:21Z","modified":"2025-11-05T00:31:33Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-284","CWE-672"],"updated_at":"2026-11-02T15:04:39.50413Z"}],"nvd":[{"id":"CVE-2025-58149","description":"When passing through PCI devices, the detach logic in libxl won't remove\naccess permissions to any 64bit memory BARs the device might have.  As a\nresult a domain can still have access any 64bit memory BAR when such\ndevice is no longer assigned to the domain.\n\nFor PV domains the permission leak allows the domain itself to map the memory\nin the page-tables.  For HVM it would require a compromised device model or\nstubdomain to map the leaked memory into the HVM domain p2m.","status":"published","published":"2025-10-31T12:15:35.143Z","modified":"2026-10-19T13:10:00.11Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-672"],"updated_at":"2026-11-02T14:11:41.607433Z"}],"osv":[{"id":"ALPINE-CVE-2025-58149","description":"When passing through PCI devices, the detach logic in libxl won't remove\naccess permissions to any 64bit memory BARs the device might have.  As a\nresult a domain can still have access any 64bit memory BAR when such\ndevice is no longer assigned to the domain.\n\nFor PV domains the permission leak allows the domain itself to map the memory\nin the page-tables.  For HVM it would require a compromised device model or\nstubdomain to map the leaked memory into the HVM domain p2m.","status":"published","published":"2025-10-31T12:15:35.143Z","modified":"2026-08-27T22:18:02.993931836Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:27:50.269992Z"},{"id":"CVE-2025-58149","description":"When passing through PCI devices, the detach logic in libxl won't remove\naccess permissions to any 64bit memory BARs the device might have.  As a\nresult a domain can still have access any 64bit memory BAR when such\ndevice is no longer assigned to the domain.\n\nFor PV domains the permission leak allows the domain itself to map the memory\nin the page-tables.  For HVM it would require a compromised device model or\nstubdomain to map the leaked memory into the HVM domain p2m.","status":"published","published":"2025-10-31T12:15:35.143Z","modified":"2026-04-16T04:32:59.17342495Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:51.190588Z"},{"id":"DEBIAN-CVE-2025-58149","description":"When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have.  As a result a domain can still have access any 64bit memory BAR when such device is no longer assigned to the domain.  For PV domains the permission leak allows the domain itself to map the memory in the page-tables.  For HVM it would require a compromised device model or stubdomain to map the leaked memory into the HVM domain p2m.","status":"published","published":"2025-10-31T12:15:35.143Z","modified":"2026-10-23T17:47:47.47029066Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:47.697959Z"},{"id":"UBUNTU-CVE-2025-58149","description":"When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have.  As a result a domain can still have access any 64bit memory BAR when such device is no longer assigned to the domain. For PV domains the permission leak allows the domain itself to map the memory in the page-tables.  For HVM it would require a compromised device model or stubdomain to map the leaked memory into the HVM domain p2m.","status":"published","published":"2025-10-31T12:15:00Z","modified":"2026-10-17T12:57:09.32420371Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T16:55:50.817402Z"},{"id":"DSA-6068-1","title":"xen - security update","status":"published","published":"2025-12-02T00:00:00Z","modified":"2025-12-02T23:47:43.25474Z","updated_at":"2026-11-02T15:46:18.296714Z"},{"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-2025:15719-1","title":"xen-4.20.1_08-1.1 on GA media","description":"These are all security issues fixed in the xen-4.20.1_08-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-11-07T00:00:00Z","modified":"2026-03-23T04:54:07.810754Z","updated_at":"2026-11-02T16:58:37.810934Z"},{"id":"SUSE-SU-2025:4419-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\nUpdate to Xen 4.20.2 (jsc#PED-8907).\n    \nSecurity issues fixed:\n  \n- CVE-2025-58149: incorrect removal of permissions on PCI device unplug allows PV guests to access memory of devices no\n  longer assigned to it (XSA-476, bsc#1252692).\n\nOther issues fixed:\n    \n- Failure to restart xenstored (bsc#1254180).    \n    \n","status":"published","published":"2025-12-16T18:57:18Z","modified":"2026-02-04T02:57:55.190364Z","updated_at":"2026-11-02T15:54:00.344164Z"},{"id":"SUSE-SU-2025:4490-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\nUpdate to Xen 4.17.6.\n\nSecurity issues fixed:\n\n- CVE-2025-58149: incorrect removal of permissions on PCI device unplug allows PV guests to access memory of devices no\n  longer assigned to them (bsc#1252692).\n\nOther issues fixed:\n\n- Several upstream bug fixes (bsc#1027519).\n- Failure to restart xenstored (bsc#1254180).\n","status":"published","published":"2025-12-19T11:17:12Z","modified":"2026-03-23T04:51:48.283101Z","updated_at":"2026-11-02T15:54:00.846737Z"},{"id":"SUSE-SU-2026:0012-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\nSecurity issues fixed:  \n\n- CVE-2025-27466: NULL pointer dereference in the Viridian interface when updating the reference TSC area (bsc#1248807).\n- CVE-2025-58142: NULL pointer dereference in the Viridian interface due to assumption that the SIM page is mapped when\n  a synthetic timer message has to be delivered (bsc#1248807).\n- CVE-2025-58143: information leak and reference counter underflow in the Viridian interface due to race in the mapping\n  of the reference TSC page (bsc#1248807).\n- CVE-2025-58147: incorrect input sanitisation in Viridian hypercalls using the HV_VP_SET Sparse format can lead to\n  out-of-bounds write through `vpmask_set()` (bsc#1251271).\n- CVE-2025-58148: incorrect input sanitisation in Viridian hypercalls using any input format can lead to out-of-bounds\n  read through `send_ipi()` (bsc#1251271).\n- CVE-2025-58149: incorrect removal of permissions on PCI device unplug allows PV guests to access memory of devices no\n  longer assigned to them (bsc#1252692).\n\nOther issues fixed:\n\n- Several upstream bug fixes (bsc#1027519).\n- Failure to restart xenstored (bsc#1254180).\n","status":"published","published":"2026-01-05T10:31:27Z","modified":"2026-03-23T04:51:41.449258Z","updated_at":"2026-11-02T15:54:00.846737Z"},{"id":"SUSE-SU-2026:0303-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\nSecurity fixes:\n  \n- CVE-2025-58150: Fixed buffer overrun with shadow paging and \n  tracing (XSA-477) (bsc#1256745)\n- CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation \n  (XSA-479) (bsc#1256747)\n- CVE-2025-58149: Fixed incorrect removal od permissions on PCI\n  device unplug allow PV guests to access memory of devices no \n  longer assigned to it (XSA-476) (bsc#1252692)\n- CVE-2025-27466, CVE-2025-58142, CVE-2025-58143: Fixed multiple\n  vulnerabilities in the Viridian interface (XSA-472) (bsc#1248807)\n\nOther fixes:\n\n- Fixed virtxend service restart. Caused by a failure to start \n  xenstored (bsc#1254180)\n","status":"published","published":"2026-01-27T16:14:45Z","modified":"2026-03-23T04:52:06.998777Z","updated_at":"2026-11-02T15:54:00.846737Z"},{"id":"SUSE-SU-2026:0328-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\nSecurity fixes:\n  \n- CVE-2025-58150: Fixed buffer overrun with shadow paging and \n  tracing (XSA-477) (bsc#1256745)\n- CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation \n  (XSA-479) (bsc#1256747)\n- CVE-2025-58149: Fixed incorrect removal od permissions on PCI\n  device unplug allow PV guests to access memory of devices no \n  longer assigned to it (XSA-476) (bsc#1252692)\n","status":"published","published":"2026-01-28T15:39:28Z","modified":"2026-03-23T04:52:08.599797Z","updated_at":"2026-11-02T15:54:00.846737Z"},{"id":"SUSE-SU-2026:0394-1","title":"Security update for xen","description":"This update for xen fixes the following issues:\n\nSecurity fixes:\n  \n- CVE-2025-58150: Fixed buffer overrun with shadow paging and \n  tracing (XSA-477) (bsc#1256745)\n- CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation \n  (XSA-479) (bsc#1256747)\n- CVE-2025-58149: Fixed incorrect removal od permissions on PCI\n  device unplug allow PV guests to access memory of devices no \n  longer assigned to it (XSA-476) (bsc#1252692)\n\nOther fixes:\n\n- Fixed virtxend service restart. Caused by a failure to start \n  xenstored (bsc#1254180)\n","status":"published","published":"2026-02-05T15:42:11Z","modified":"2026-02-07T14:00:14.638921Z","updated_at":"2026-11-02T15:54:00.846737Z"}]}}