{"cve":{"cve_id":"CVE-2026-53281","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/vt-d: Avoid NULL pointer dereference or refcount corruption\n\nCommit 60f030f7418d (\"iommu/vt-d: Avoid use of NULL after WARN_ON_ONCE\")\nfixed a NULL pointer dereference in an unlikely situation partly.\n\nIf dev_pasid is not found in the dev_pasids list, it remains NULL.\nHowever, the teardown operations are executed unconditionally, this lead\nto a NULL pointer dereference or refcount corruption.\n\nIf the domain was never attached to this IOMMU, info will be NULL, which\nwould cause an immediate dereference when checking --info->refcnt.\n\nEven if info is not NULL, decrementing the refcount without having removed\na valid PASID might unbalance the count. This could lead to premature\ndropping of the refcount to 0, potentially causing a use-after-free for the\nremaining active devices sharing the domain.\n\nFix it by returning early if dev_pasid is NULL, before executing the\nteardown operations.\n\nIssue found by AI review and suggested by Kevin Tian.\nhttps://sashiko.dev/#/patchset/20260421031347.1408890-1-zhenzhong.duan%40intel.com","published_at":"2026-06-26T19:40:43.040000Z","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/9022cb9ac0c2a72a57fa8ebf92ac74f953ca0153","https://git.kernel.org/stable/c/cdfe3c9f2c9e28a8651ee463c88ad191ced2f840","https://git.kernel.org/stable/c/79ea2feb917b05366b49d85573c9c5331f043b2c"],"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":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:51.545322Z"},"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":"60f030f7418d3f1d94f2fb207fe3080e1844630b","version_start_inclusive":true,"version_end":"9022cb9ac0c2a72a57fa8ebf92ac74f953ca0153","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:60f030f7418d3f1d94f2fb207fe3080e1844630b:9022cb9ac0c2a72a57fa8ebf92ac74f953ca0153"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"60f030f7418d3f1d94f2fb207fe3080e1844630b","version_start_inclusive":true,"version_end":"cdfe3c9f2c9e28a8651ee463c88ad191ced2f840","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:60f030f7418d3f1d94f2fb207fe3080e1844630b:cdfe3c9f2c9e28a8651ee463c88ad191ced2f840"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"60f030f7418d3f1d94f2fb207fe3080e1844630b","version_start_inclusive":true,"version_end":"79ea2feb917b05366b49d85573c9c5331f043b2c","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:60f030f7418d3f1d94f2fb207fe3080e1844630b:79ea2feb917b05366b49d85573c9c5331f043b2c"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"68ec78beb4a3fb0877cbaaf49758c85410c05977","version_start_inclusive":true,"version_end":"68ec78beb4a3fb0877cbaaf49758c85410c05977","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:68ec78beb4a3fb0877cbaaf49758c85410c05977:68ec78beb4a3fb0877cbaaf49758c85410c05977"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"df96876be3b064aefc493f760e0639765d13ed0d","version_start_inclusive":true,"version_end":"df96876be3b064aefc493f760e0639765d13ed0d","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:df96876be3b064aefc493f760e0639765d13ed0d:df96876be3b064aefc493f760e0639765d13ed0d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.57","version_start_inclusive":true,"version_end":"6.13","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.12.57:6.13"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.13.3","version_start_inclusive":true,"version_end":"6.14","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.13.3:6.14"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.14","version_start_inclusive":true,"version_end":"6.14","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.14:6.14"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.14","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.14"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.33","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.33:6.18.*"},{"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/9022cb9ac0c2a72a57fa8ebf92ac74f953ca0153","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/cdfe3c9f2c9e28a8651ee463c88ad191ced2f840","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/79ea2feb917b05366b49d85573c9c5331f043b2c","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-26T19:40:43.040000Z","label":"CVE published","source":null}]}