{"cve":{"cve_id":"CVE-2026-52952","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu: Fix WARN_ON in __iommu_group_set_domain_nofail() due to reset\n\nIn __iommu_group_set_domain_internal(), concurrent domain attachments are\nrejected when any device in the group is recovering. This is necessary to\nfence concurrent attachments to a multi-device group where devices might\nshare the same RID due to PCI DMA alias quirks, but triggers the WARN_ON in\n__iommu_group_set_domain_nofail().\n\nOther IOMMU_SET_DOMAIN_MUST_SUCCEED callers in detach/teardown paths, such\nas __iommu_group_set_core_domain and __iommu_release_dma_ownership, should\nnot be rejected, as the domain would be freed anyway in these nofail paths\nwhile group->domain is still pointing to it. So pci_dev_reset_iommu_done()\ncould trigger a UAF when re-attaching group->domain.\n\nHonor the IOMMU_SET_DOMAIN_MUST_SUCCEED flag, allowing the callers through\nthe group->recovery_cnt fence, so as to update the group->domain pointer.\nInstead add a gdev->blocked check in the device iteration loop, to prevent\nany concurrent per-device detachment.","published_at":"2026-06-24T16:28:35.247000Z","last_modified_at":null,"cvss_v3_score":8.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/8fc289e809f3eb7e36cadc4684ab6fad747a5a93","https://git.kernel.org/stable/c/5474e6e17a262db45c60575c73f70210f5c7001f"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:22.518073Z","updated_at":"2026-06-28T23:30:49.890169Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"c279e83953d937470f8a6e69b69f62608714f13f","version_start_inclusive":true,"version_end":"8fc289e809f3eb7e36cadc4684ab6fad747a5a93","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:c279e83953d937470f8a6e69b69f62608714f13f:8fc289e809f3eb7e36cadc4684ab6fad747a5a93"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"c279e83953d937470f8a6e69b69f62608714f13f","version_start_inclusive":true,"version_end":"5474e6e17a262db45c60575c73f70210f5c7001f","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:c279e83953d937470f8a6e69b69f62608714f13f:5474e6e17a262db45c60575c73f70210f5c7001f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0","version_start_inclusive":true,"version_end":"7.0","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0:7.0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"7.0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:7.0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.10","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.10:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/8fc289e809f3eb7e36cadc4684ab6fad747a5a93","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/5474e6e17a262db45c60575c73f70210f5c7001f","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T16:28:35.247000Z","label":"CVE published","source":null}]}