{"id":"CVE-2026-59048","kind":"vulnerability","aliases":["CVE-2026-59048"],"related":[],"title":"Linux trace code: out-of-bounds read leaks kernel memory to local users","description":"In rb_cpu_init of trace.c, there is a possible out-of-bounds read due to an incorrect bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.","summary":"An incorrect bounds check in rb_cpu_init in trace.c allows an out-of-bounds read. A local user with no extra privileges can read memory they should not see, which is information disclosure only.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["local-users","other"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-02T20:17:58+00:00","first_seen_at":"2026-11-02T20:35:37+00:00","triaged_at":"2026-11-02T20:36:44+00:00","updated_at":"2026-11-02T20:36:44+00:00","category":"other","confidence":0.4,"triage":{"at":"2026-11-02T20:36:44Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Linux trace code: out-of-bounds read leaks kernel memory to local users","impact":"low","summary":"An incorrect bounds check in rb_cpu_init in trace.c allows an out-of-bounds read. A local user with no extra privileges can read memory they should not see, which is information disclosure only.","audience":"businesses","category":"other","nicknames":[],"who_cares":["local-users"],"confidence":0.4,"fix_status":"unknown","needs_auth":"unknown","worst_case":"local user reads out-of-bounds memory contents","analyst_note":"Identify the affected product and version range for trace.c rb_cpu_init from the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-59048 and the upstream fix.","how_to_check":"unknown","plain_action":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"The sources do not name the affected product or version range; trace.c in rb_cpu_init suggests a kernel or runtime tracing component. Systems where local users can run code are the ones to look at. unknown","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000623,"input_tokens":4096,"output_tokens":427,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-59048':17A,20A 'addit':89C 'allow':34B 'bound':7A,26B,39B,72C,78C 'check':27B,79C 'code':3A 'could':81C 'cpu':30B,61C 'cve':15A,18A 'disclosur':58B,86C 'due':74C 'execut':90C 'exploit':99C 'extra':46B 'incorrect':25B,77C 'inform':57B,85C 'init':31B,62C 'interact':94C 'kernel':10A 'lead':82C 'leak':9A 'linux':1A 'local':13A,22B,42B,84C 'local-us':21B 'memori':11A,50B 'need':92C,97C 'out-of-bound':4A,36B,69C 'possibl':68C 'privileg':47B,91C 'rb':29B,60C 'read':8A,40B,49B,73C 'see':54B 'trace':2A 'trace.c':33B,64C 'user':14A,23B,43B,93C","nicknames":[],"mitigations":[],"who_affected":"The sources do not name the affected product or version range; trace.c in rb_cpu_init suggests a kernel or runtime tracing component. Systems where local users can run code are the ones to look at. unknown","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["localusers","other","unknown"],"first_public_at":"2026-11-02T20:17:58+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-59048","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59048","severity":null,"published_at":"2026-11-02T20:17:58+00:00","modified_at":"2026-11-02T20:17:58+00:00","first_seen_at":"2026-11-02T20:35:37+00:00","fetched_at":"2026-11-02T20:35:37+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}