{"cve":{"cve_id":"CVE-2011-2534","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00462,"epss_percentile":0.3654,"epss_as_of":"2026-06-23","description":"Buffer overflow in the clusterip_proc_write function in net/ipv4/netfilter/ipt_CLUSTERIP.c in the Linux kernel before 2.6.39 might allow local users to cause a denial of service or have unspecified other impact via a crafted write operation, related to string data that lacks a terminating '\\0' character.","published_at":"2011-06-22T23:00:00Z","last_modified_at":"2026-06-16T23:31:33.507000Z","cvss_v3_score":7.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-120"],"nvd_references":["http://www.openwall.com/lists/oss-security/2011/03/18/15","https://bugzilla.redhat.com/show_bug.cgi?id=689337","http://www.securityfocus.com/bid/46921","http://marc.info/?l=netfilter-devel&m=130036157327564&w=2","http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39","http://securityreason.com/securityalert/8284","http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=961ed183a9fd080cf306c659b8736007e44065a5","http://marc.info/?l=netfilter&m=129978077509888&w=2","http://www.openwall.com/lists/oss-security/2011/03/21/4","http://www.openwall.com/lists/oss-security/2011/03/21/1"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:05:54.811273Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux-kernel","product_name":"Linux kernel","version_start":null,"version_start_inclusive":null,"version_end":"2.6.39","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2011/03/18/15","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=689337","source_type":"MISC","tags":[]},{"url":"http://www.securityfocus.com/bid/46921","source_type":"MISC","tags":[]},{"url":"http://marc.info/?l=netfilter-devel&m=130036157327564&w=2","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39","source_type":"MISC","tags":[]},{"url":"http://securityreason.com/securityalert/8284","source_type":"MISC","tags":[]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=961ed183a9fd080cf306c659b8736007e44065a5","source_type":"MISC","tags":[]},{"url":"http://marc.info/?l=netfilter&m=129978077509888&w=2","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"http://www.openwall.com/lists/oss-security/2011/03/21/4","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"http://www.openwall.com/lists/oss-security/2011/03/21/1","source_type":"MAILING_LIST","tags":["mailing-list"]}],"timeline":[{"type":"published","at":"2011-06-22T23:00:00Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-24T01:34:09.132108Z","label":"CVSS score revised","source":"nvd"},{"type":"cvss_changed","at":"2026-06-24T01:34:09.132108Z","label":"CVSS score revised","source":"nvd"},{"type":"cvss_changed","at":"2026-06-24T01:34:09.132108Z","label":"CVSS score revised","source":"nvd"}]}