{"cve":"CVE-2009-3621","nvd":{"published":"2009-10-22T16:00:00.640","modified":"2026-06-16T23:12:02.200","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-400"],"references":["http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git%3Ba=commit%3Bh=77238f2b942b38ab4e7f3aced44084493e4a8675","http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html","http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html","http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html","http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html"],"products":["canonical:ubuntu_linux","fedoraproject:fedora","linux:linux_kernel","opensuse:opensuse","suse:suse_linux_enterprise_desktop","suse:suse_linux_enterprise_server","vmware:esx","vmware:vma"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-3621","score":0.00987,"percentile":0.62447,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}