{"id":"CVE-2026-52953","summary":"iommu/vt-d: Fix oops due to out of scope access","details":"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   \u003cTASK\u003e\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.","modified":"2026-07-08T08:09:43.939288382Z","published":"2026-06-24T16:28:36.110Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52953.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1e659db468476733d217c1314c1e0d9244356d6c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/88397fad7914ee74a7880fa5ce01f9eb6bfe0743"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6dea58d8625c06b9654c0555f101742481335c3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52953.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52953"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7d0c9da6c1509664d96488042bacc02308ca33b2"},{"fixed":"88397fad7914ee74a7880fa5ce01f9eb6bfe0743"},{"fixed":"1e659db468476733d217c1314c1e0d9244356d6c"},{"fixed":"a6dea58d8625c06b9654c0555f101742481335c3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52953.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52953.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"}]}