{"id":"CVE-2026-55348","kind":"vulnerability","aliases":["CVE-2026-55348"],"related":[],"title":"Android Trusty: out-of-bounds read in shared memory manager leaks data locally","description":"In GetSharedMemory of trusty_shared_memory_manager.cc, there is a possible way to trigger an out of bounds read via sign extension of a negative buffer size due to an improper or implicit cast. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.","summary":"A sign-extension error in the Trusty shared memory manager lets a negative buffer size cause an out-of-bounds read. An attacker with System-level code on the device could read memory they should not see.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["android","infrastructure","trusty"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T20:19:13+00:00","first_seen_at":"2026-11-10T20:46:06+00:00","triaged_at":"2026-11-10T20:54:00+00:00","updated_at":"2026-11-10T20:54:00+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T20:54:00Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Android Trusty: out-of-bounds read in shared memory manager leaks data locally","impact":"low","summary":"A sign-extension error in the Trusty shared memory manager lets a negative buffer size cause an out-of-bounds read. An attacker with System-level code on the device could read memory they should not see.","audience":"everyone","category":"infrastructure","nicknames":[],"who_cares":["android","trusty"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local information disclosure from device memory at System privilege","analyst_note":"Confirm affected Android patch level and fixed build from the Android security bulletin; NVD text alone gives no version or fix.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000636,"input_tokens":4556,"output_tokens":360,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-55348':17A,20A 'android':1A,21B 'attack':48B 'bound':6A,45B,78C 'buffer':38B,86C 'cast':94C 'caus':40B 'code':53B 'could':57B,96C 'cve':15A,18A 'data':13A 'devic':56B 'disclosur':101C 'due':88C 'error':28B 'execut':104C 'exploit':113C 'extens':27B,82C 'getsharedmemori':65C 'implicit':93C 'improp':91C 'inform':100C 'infrastructur':22B 'interact':108C 'lead':97C 'leak':12A 'let':35B 'level':52B 'local':14A,99C 'manag':11A,34B 'memori':10A,33B,59B 'need':106C,111C 'negat':37B,85C 'out-of-bound':3A,42B 'possibl':71C 'privileg':105C 'read':7A,46B,58B,79C 'see':63B 'share':9A,32B 'sign':26B,81C 'sign-extens':25B 'size':39B,87C 'system':51B,103C 'system-level':50B 'trigger':74C 'trusti':2A,23B,31B 'trusty_shared_memory_manager.cc':67C 'user':107C 'via':80C 'way':72C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":null,"pkeys":[],"ptokens":[],"labels":["android","infrastructure","trusty","unknown"],"campaign_type":null,"search_a":"'-2026':16A,19A '-55348':17A,20A 'android':1A 'bound':6A 'cve':15A,18A 'data':13A 'leak':12A 'local':14A 'manag':11A 'memori':10A 'out-of-bound':3A 'read':7A 'share':9A 'trusti':2A","search_b":"'android':21B 'attack':48B 'bound':45B 'buffer':38B 'caus':40B 'code':53B 'could':57B 'devic':56B 'error':28B 'extens':27B 'infrastructur':22B 'let':35B 'level':52B 'manag':34B 'memori':33B,59B 'negat':37B 'out-of-bound':42B 'read':46B,58B 'see':63B 'share':32B 'sign':26B 'sign-extens':25B 'size':39B 'system':51B 'system-level':50B 'trusti':23B,31B","search_c":"'bound':78C 'buffer':86C 'cast':94C 'could':96C 'disclosur':101C 'due':88C 'execut':104C 'exploit':113C 'extens':82C 'getsharedmemori':65C 'implicit':93C 'improp':91C 'inform':100C 'interact':108C 'lead':97C 'local':99C 'need':106C,111C 'negat':85C 'possibl':71C 'privileg':105C 'read':79C 'sign':81C 'size':87C 'system':103C 'trigger':74C 'trusty_shared_memory_manager.cc':67C 'user':107C 'via':80C 'way':72C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T20:19:13+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-55348","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55348","severity":null,"published_at":"2026-11-10T20:19:13+00:00","modified_at":"2026-11-10T20:19:13+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"}