{"id":74,"date":"2026-10-29T06:43:03","date_gmt":"2026-10-29T06:43:03","guid":{"rendered":"https:\/\/bugskan.com\/?p=74"},"modified":"2026-10-29T06:43:03","modified_gmt":"2026-10-29T06:43:03","slug":"how-o3-helped-a-researcher-find-a-linux-smb-memory-safety-flaw","status":"publish","type":"post","link":"https:\/\/bugskan.com\/index.php\/2026\/10\/29\/how-o3-helped-a-researcher-find-a-linux-smb-memory-safety-flaw\/","title":{"rendered":"How o3 helped a researcher find a Linux SMB memory-safety flaw"},"content":{"rendered":"<p>In May 2025, researcher Sean Heelan described using o3 during an investigation of Linux\u2019s ksmbd implementation. The work uncovered CVE-2025-37899, a use-after-free involving the SMB logoff handler and concurrent connections.<\/p>\n<p>The affected software is the Linux SMB implementation. The involvement of an AI model in finding the bug does not make OpenAI the vulnerable vendor.<\/p>\n<p>Heelan\u2019s account is useful because it describes the evaluation setup, code context, and limitations rather than only announcing a successful result. For teams evaluating AI-assisted research, retain that distinction: a valid finding is evidence of capability, not a guarantee that every run will be accurate.<\/p>\n<p>Operators should consult their Linux distributor\u2019s advisory for package applicability and fixes. This retrospective does not determine whether a specific host is exposed.<\/p>\n<p><a href=\"https:\/\/sean.heelan.io\/2025\/05\/22\/how-i-used-o3-to-find-cve-2025-37899-a-remote-zeroday-vulnerability-in-the-linux-kernels-smb-implementation\/\">Read the original source<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The vulnerability affected Linux ksmbd; OpenAI\u2019s model was used during discovery.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"bugskan_incident_id":"inc_38afdeb883eb77","bugskan_event_type":"research","bugskan_response":"unknown","bugskan_technical_severity":"","bugskan_technical_severity_source":"","bugskan_evidence_quality":"high","bugskan_affected_scope":"","bugskan_recommended_next_step":"","bugskan_who_should_check":"","bugskan_material_updated_at":"2025-05-26T00:00:00Z","bugskan_reviewer_name":"","bugskan_reviewed_at":"","bugskan_legacy_state":"mapped","bugskan_featured":false,"bugskan_sample":false,"footnotes":""},"categories":[1],"tags":[],"bugskan_format":[3],"bugskan_technology":[],"class_list":["post-74","post","type-post","status-publish","format-standard","hentry","category-uncategorized","bugskan_format-research-explained"],"_links":{"self":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts\/74","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/comments?post=74"}],"version-history":[{"count":1,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts\/74\/revisions"}],"predecessor-version":[{"id":311,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts\/74\/revisions\/311"}],"wp:attachment":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/media?parent=74"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/categories?post=74"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/tags?post=74"},{"taxonomy":"bugskan_format","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/bugskan_format?post=74"},{"taxonomy":"bugskan_technology","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/bugskan_technology?post=74"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}