{"id":"CVE-2009-3621","aliases":["DSA-1927-1","DSA-1928-1","DSA-1929-1","EUVD-2009-3602","GHSA-g479-4r8w-jx3w","RHSA-2009:1540","RHSA-2009:1670","RHSA-2009:1671"],"status":"published","title":"net/unix/af_unix.c in the Linux kernel 2.6.31.4 and earlier allows local users to cause a denial...","description":"net/unix/af_unix.c in the Linux kernel 2.6.31.4 and earlier allows local users to cause a denial of service (system hang) by creating an abstract-namespace AF_UNIX listening socket, performing a shutdown operation on this socket, and then performing a series of connect operations to this socket.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00987,"percentile":0.62685,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-400"],"published":"2009-10-22T15:26:00Z","modified":"2026-06-29T10:02:49Z","exploits":[{"source":"exploitdb","id":"EDB-10022","title":"Linux Kernel 2.6.31.4 - 'unix_stream_connect()' Local Denial of 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