{"id":"CVE-2011-0491","details":"The tor_realloc function in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not validate a certain size value during memory allocation, which might allow remote attackers to cause a denial of service (daemon crash) via unspecified vectors, related to \"underflow errors.\"","modified":"2026-04-10T03:41:37.744437Z","published":"2011-01-19T12:00:20Z","references":[{"type":"ADVISORY","url":"http://blog.torproject.org/blog/tor-02129-released-security-patches"},{"type":"FIX","url":"http://archives.seul.org/or/announce/Jan-2011/msg00000.html"},{"type":"FIX","url":"http://blog.torproject.org/blog/tor-02129-released-security-patches"},{"type":"FIX","url":"https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog"},{"type":"WEB","url":"http://www.securityfocus.com/bid/45953"},{"type":"WEB","url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/64888"},{"type":"WEB","url":"https://trac.torproject.org/projects/tor/ticket/2324"}],"schema_version":"1.7.5"}