{"cve":{"cve_id":"CVE-2017-2634","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":0.05176,"epss_percentile":0.91363,"epss_as_of":"2026-06-23","description":"It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation before 2.6.22.17 used the IPv4-only inet_sk_rebuild_header() function for both IPv4 and IPv6 DCCP connections, which could result in memory corruptions. A remote attacker could use this flaw to crash the system.","published_at":"2018-07-27T19:00:00Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-476"],"nvd_references":["http://rhn.redhat.com/errata/RHSA-2017-0323.html","https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51","http://rhn.redhat.com/errata/RHSA-2017-0347.html","http://www.securitytracker.com/id/1037909","https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634","http://rhn.redhat.com/errata/RHSA-2017-0346.html","http://www.securityfocus.com/bid/96529"],"vuln_status":null,"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":"2026-06-28T23:09:57.741872Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"kernel","product_name":"Kernel","version_start":"2.6.22.17","version_start_inclusive":true,"version_end":"2.6.22.17","version_end_inclusive":true,"cpe23_uri":"cve5:linux:kernel:2.6.22.17:2.6.22.17"}],"exploit_refs":[],"news":[],"references":[{"url":"http://rhn.redhat.com/errata/RHSA-2017-0323.html","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51","source_type":"MISC","tags":["patch"]},{"url":"http://rhn.redhat.com/errata/RHSA-2017-0347.html","source_type":"MISC","tags":[]},{"url":"http://www.securitytracker.com/id/1037909","source_type":"MISC","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634","source_type":"MISC","tags":[]},{"url":"http://rhn.redhat.com/errata/RHSA-2017-0346.html","source_type":"MISC","tags":[]},{"url":"http://www.securityfocus.com/bid/96529","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2018-07-27T19:00:00Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T16:56:31.007704Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T16:56:31.007704Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T16:56:31.007704Z","label":"CVSS score revised","source":"cvelistv5"}]}