{"id":"CVE-2026-52953","revision":"21bd90f4c4d24c18afeb510bb78d557a","records":[{"revision":"21bd90f4c4d24c18afeb510bb78d557a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-52953","aliases":[],"title":"iommu/vt-d: Fix oops due to out of scope access","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Fix oops due to out of scope access\n\nBelow oops triggers when kill QEMU process:\n\n  Oops: general protection fault, probably for non-canonical address 0x7fffffff844eaaa7: 0000 [#1] SMP NOPTI\n  Call Trace:\n   <TASK>\n   do_raw_spin_lock+0xaa/0xc0\n   _raw_spin_lock_irqsave+0x21/0x40\n   domain_remove_dev_pasid+0x52/0x160\n   intel_nested_set_dev_pasid+0x1b9/0x1e0\n   __iommu_set_group_pasid+0x56/0x120\n   pci_dev_reset_iommu_done+0xe3/0x180\n   pcie_flr+0x65/0x160\n   __pci_reset_function_locked+0x5b/0x120\n   vfio_pci_core_close_device+0x63/0xe0 [vfio_pci_core]\n   vfio_df_close+0x4f/0xa0\n   vfio_df_unbind_iommufd+0x2d/0x60\n   vfio_device_fops_release+0x3e/0x40\n   __fput+0xe5/0x2c0\n   task_work_run+0x58/0xa0\n   do_exit+0x2c8/0x600\n   do_group_exit+0x2f/0xa0\n   get_signal+0x863/0x8c0\n   arch_do_signal_or_restart+0x24/0x100\n   exit_to_user_mode_loop+0x87/0x380\n   do_syscall_64+0x2ff/0x11e0\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThe global static blocked domain is a dummy domain without corresponding\ndmar_domain structure, accessing beyond iommu_domain structure triggers\noops easily. Fix it by return early in domain_remove_dev_pasid() like\nidentity domain.","state":0,"publishedAt":"2026-06-24T16:28:36.11+00:00","modifiedAt":"2026-10-19T19:47:09.648+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/iommu/intel/iommu.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7d0c9da6c1509664d96488042bacc02308ca33b2\",\n                            \"lessThan\": \"88397fad7914ee74a7880fa5ce01f9eb6bfe0743\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7d0c9da6c1509664d96488042bacc02308ca33b2\",\n                            \"lessThan\": \"1e659db468476733d217c1314c1e0d9244356d6c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7d0c9da6c1509664d96488042bacc02308ca33b2\",\n                            \"lessThan\": \"a6dea58d8625c06b9654c0555f101742481335c3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/iommu/intel/iommu.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.33\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.10\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/88397fad7914ee74a7880fa5ce01f9eb6bfe0743","https://git.kernel.org/stable/c/1e659db468476733d217c1314c1e0d9244356d6c","https://git.kernel.org/stable/c/a6dea58d8625c06b9654c0555f101742481335c3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-52953","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-52953","identifiers":["CVE-2026-52953"]},"retained":false,"historicalAffected":[]}],"coverage":[]}