{"id":"CVE-2026-56912","kind":"vulnerability","aliases":["CVE-2026-56912"],"related":[],"title":"Kernel SMMU driver logic error allows local privilege escalation","description":"In ac_remove_smmu_prot_internal of acfw_smmu.c, there is a possible Logic error due to a logic error in the code. This could lead to local escalation of privilege with execution privileges needed. User interaction is for exploitation.","summary":"A logic error in the ac_remove_smmu_prot_internal function of acfw_smmu.c can be exploited to escalate privileges locally. The attacker needs code execution on the device and user interaction is required for exploitation.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"acfw_smmu.c","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["arm-smmu","embedded","infrastructure","linux-kernel"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T20:19:15+00:00","first_seen_at":"2026-11-10T20:46:06+00:00","triaged_at":"2026-11-10T20:53:51+00:00","updated_at":"2026-11-10T20:53:51+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-11-10T20:53:51Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Kernel SMMU driver logic error allows local privilege escalation","impact":"high","summary":"A logic error in the ac_remove_smmu_prot_internal function of acfw_smmu.c can be exploited to escalate privileges locally. The attacker needs code execution on the device and user interaction is required for exploitation.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["linux-kernel","arm-smmu","embedded"],"confidence":0.4,"fix_status":"unknown","needs_auth":"unknown","worst_case":"local code gains elevated privileges on the device","analyst_note":"Identify the vendor and affected kernel or firmware versions from the NVD entry and the vendor bulletin; the sources give no product or fixed version.","how_to_check":"unknown","plain_action":"","product_name":"acfw_smmu.c","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"yes","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000653,"input_tokens":4532,"output_tokens":399,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':11A,14A '-56912':12A,15A 'ac':31B,63C 'acfw':16A,38B,69C 'allow':6A 'arm':19B 'arm-smmu':18B 'attack':48B 'code':50B,84C 'could':86C 'cve':10A,13A 'devic':54B 'driver':3A 'due':77C 'embed':21B 'error':5A,28B,76C,81C 'escal':9A,44B,90C 'execut':51B,94C 'exploit':42B,61B,101C 'function':36B 'infrastructur':22B 'interact':57B,98C 'intern':35B,67C 'kernel':1A,25B 'lead':87C 'linux':24B 'linux-kernel':23B 'local':7A,46B,89C 'logic':4A,27B,75C,80C 'need':49B,96C 'possibl':74C 'privileg':8A,45B,92C,95C 'prot':34B,66C 'remov':32B,64C 'requir':59B 'smmu':2A,20B,33B,65C 'smmu.c':17A,39B,70C 'user':56B,97C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["acfwsmmuc"],"ptokens":["acfw","smmu"],"labels":["armsmmu","embedded","infrastructure","linuxkernel","unknown","vendor"],"campaign_type":null,"search_a":"'-2026':11A,14A '-56912':12A,15A 'acfw':16A 'allow':6A 'cve':10A,13A 'driver':3A 'error':5A 'escal':9A 'kernel':1A 'local':7A 'logic':4A 'privileg':8A 'smmu':2A 'smmu.c':17A","search_b":"'ac':31B 'acfw':38B 'arm':19B 'arm-smmu':18B 'attack':48B 'code':50B 'devic':54B 'embed':21B 'error':28B 'escal':44B 'execut':51B 'exploit':42B,61B 'function':36B 'infrastructur':22B 'interact':57B 'intern':35B 'kernel':25B 'linux':24B 'linux-kernel':23B 'local':46B 'logic':27B 'need':49B 'privileg':45B 'prot':34B 'remov':32B 'requir':59B 'smmu':20B,33B 'smmu.c':39B 'user':56B","search_c":"'ac':63C 'acfw':69C 'code':84C 'could':86C 'due':77C 'error':76C,81C 'escal':90C 'execut':94C 'exploit':101C 'interact':98C 'intern':67C 'lead':87C 'local':89C 'logic':75C,80C 'need':96C 'possibl':74C 'privileg':92C,95C 'prot':66C 'remov':64C 'smmu':65C 'smmu.c':70C 'user':97C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T20:19:15+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-56912","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56912","severity":null,"published_at":"2026-11-10T20:19:15+00:00","modified_at":"2026-11-10T20:19:15+00:00","first_seen_at":"2026-11-10T20:46:06+00:00","fetched_at":"2026-11-10T20:46:06+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"}