{"id":"CVE-2026-60020","kind":"vulnerability","aliases":["CVE-2026-60020"],"related":[],"title":"Intel TDX MigTD virtio-serial driver leaks memory, enabling local denial of service","description":"Missing release of memory after effective lifetime in the MigTD virtio-serial driver for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. System software adversary with a privileged user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.","summary":"The MigTD virtio-serial driver in Intel's TDX Migration Trust Domain does not free memory after its useful lifetime, so memory is leaked. A privileged local user on the system can exhaust resources and cause a denial of service.","severity":"medium","cvss":4.6,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["confidential-computing","infrastructure","intel-tdx","migtd","virtio"],"not_affected_if":["no-tdx-migtd"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T18:17:42+00:00","first_seen_at":"2026-11-10T18:22:59+00:00","triaged_at":"2026-11-10T18:26:31+00:00","updated_at":"2026-11-10T18:26:31+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T18:26:31Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Intel TDX MigTD virtio-serial driver leaks memory, enabling local denial of service","impact":"low","summary":"The MigTD virtio-serial driver in Intel's TDX Migration Trust Domain does not free memory after its useful lifetime, so memory is leaked. A privileged local user on the system can exhaust resources and cause a denial of service.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["intel-tdx","migtd","virtio","confidential-computing"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local privileged attacker causes denial of service by exhausting memory","analyst_note":"Find the affected MigTD versions and Intel's advisory with the fixed release, from the NVD entry or Intel's security center.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-tdx-migtd"],"who_is_affected":"Affects systems running Intel TDX with the MigTD Trust Domain and its virtio-serial driver, where a privileged user on the host or guest side can trigger the leak. The sources do not say which MigTD versions are affected or how to confirm the driver is in use, so unknown.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00071,"input_tokens":4675,"output_tokens":484,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-60020':17A,20A '0':96C 'access':129C 'adversari':106C 'allow':99C 'attack':116C,131C 'avail':156C,171C 'caus':66B 'combin':111C 'complex':115C 'comput':23B 'confidenti':22B,151C,166C 'confidential-comput':21B 'cve':15A,18A 'denial':12A,68B,101C,119C 'domain':42B,92C 'driver':7A,35B,84C 'effect':76C 'enabl':10A,118C 'exhaust':63B 'free':45B 'hypervisor':97C 'impact':149C,173C 'infrastructur':24B 'integr':153C,168C 'intel':1A,26B,37B,87C 'intel-tdx':25B 'interact':144C 'intern':138C 'knowledg':139C 'leak':8A,54B 'lifetim':50B,77C 'local':11A,57B,128C 'low':114C,157C 'may':98C,117C,124C,148C 'memori':9A,46B,52B,74C 'migrat':40B,90C 'migtd':3A,28B,31B,80C,93C 'miss':71C 'none':152C,154C,167C,169C,172C 'occur':126C 'potenti':125C,146C 'present':135C 'privileg':56B,109C 'r':88C 'releas':72C 'requir':132C,141C 'resourc':64B 'result':123C,162C 'ring':95C 'serial':6A,34B,83C 'servic':14A,70B,103C,121C 'softwar':105C 'special':137C 'subsequ':164C 'system':61B,104C,161C,165C 'tdx':2A,27B,39B,89C 'trust':41B,91C 'use':49B 'user':58B,110C,143C 'via':127C 'virtio':5A,29B,33B,82C 'virtio-seri':4A,32B,81C 'vulner':147C,160C 'within':94C 'without':136C","nicknames":[],"mitigations":[],"who_affected":"Affects systems running Intel TDX with the MigTD Trust Domain and its virtio-serial driver, where a privileged user on the host or guest side can trigger the leak. The sources do not say which MigTD versions are affected or how to confirm the driver is in use, so unknown.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["confidentialcomputing","infrastructure","inteltdx","medium","migtd","virtio"],"campaign_type":null,"search_a":"'-2026':16A,19A '-60020':17A,20A 'cve':15A,18A 'denial':12A 'driver':7A 'enabl':10A 'intel':1A 'leak':8A 'local':11A 'memori':9A 'migtd':3A 'serial':6A 'servic':14A 'tdx':2A 'virtio':5A 'virtio-seri':4A","search_b":"'caus':66B 'comput':23B 'confidenti':22B 'confidential-comput':21B 'denial':68B 'domain':42B 'driver':35B 'exhaust':63B 'free':45B 'infrastructur':24B 'intel':26B,37B 'intel-tdx':25B 'leak':54B 'lifetim':50B 'local':57B 'memori':46B,52B 'migrat':40B 'migtd':28B,31B 'privileg':56B 'resourc':64B 'serial':34B 'servic':70B 'system':61B 'tdx':27B,39B 'trust':41B 'use':49B 'user':58B 'virtio':29B,33B 'virtio-seri':32B","search_c":"'0':96C 'access':129C 'adversari':106C 'allow':99C 'attack':116C,131C 'avail':156C,171C 'combin':111C 'complex':115C 'confidenti':151C,166C 'denial':101C,119C 'domain':92C 'driver':84C 'effect':76C 'enabl':118C 'hypervisor':97C 'impact':149C,173C 'integr':153C,168C 'intel':87C 'interact':144C 'intern':138C 'knowledg':139C 'lifetim':77C 'local':128C 'low':114C,157C 'may':98C,117C,124C,148C 'memori':74C 'migrat':90C 'migtd':80C,93C 'miss':71C 'none':152C,154C,167C,169C,172C 'occur':126C 'potenti':125C,146C 'present':135C 'privileg':109C 'r':88C 'releas':72C 'requir':132C,141C 'result':123C,162C 'ring':95C 'serial':83C 'servic':103C,121C 'softwar':105C 'special':137C 'subsequ':164C 'system':104C,161C,165C 'tdx':89C 'trust':91C 'user':110C,143C 'via':127C 'virtio':82C 'virtio-seri':81C 'vulner':147C,160C 'within':94C 'without':136C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T18:17:42+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"secure@intel.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-60020","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-60020","severity":null,"published_at":"2026-11-10T18:17:42+00:00","modified_at":"2026-11-10T18:17:42+00:00","first_seen_at":"2026-11-10T18:22:59+00:00","fetched_at":"2026-11-10T18:22:59+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}