{"cve":{"cve_id":"CVE-2026-53224","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":null,"epss_percentile":null,"epss_as_of":null,"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: validate embedded INIT chunk and address list lengths in cookie\n\nsctp_unpack_cookie() only checked that the embedded INIT chunk length\ndid not exceed the remaining cookie payload, but did not ensure that the\nINIT chunk is large enough to contain a complete INIT header.\n\nA malformed COOKIE_ECHO can therefore carry a truncated INIT chunk whose\nlength field is smaller than sizeof(struct sctp_init_chunk).  Later,\nsctp_process_init() accesses INIT parameters unconditionally, which may\nlead to out-of-bounds reads.\n\nIn addition, raw_addr_list_len is not fully validated against the\nremaining cookie payload. When cookie authentication is disabled, an\nattacker can supply an oversized raw_addr_list_len and cause\nsctp_raw_to_bind_addrs() to read beyond the end of the cookie. The\naddress parser also lacks sufficient bounds checks for parameter headers\nand lengths, allowing malformed address parameters to trigger\nout-of-bounds reads.\n\nFix this by:\n\n- requiring the embedded INIT chunk length to be at least sizeof(struct\n  sctp_init_chunk);\n- validating that the INIT chunk and raw address list together fit\n  within the cookie payload;\n- verifying sufficient data exists for each address parameter header and\n  payload before parsing it.\n\nNote that sctp_verify_init() must be called after sctp_unpack_cookie()\nand before sctp_process_init() when cookie authentication is disabled.\nThis will be addressed in a separate patch.","published_at":"2026-06-25T08:39:25.254000Z","last_modified_at":null,"cvss_v3_score":9.1,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cvss_v3_severity":"CRITICAL","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":null,"nvd_references":["https://git.kernel.org/stable/c/7560afb8cddafd829e709d7ea09230e45a825557","https://git.kernel.org/stable/c/512a9bb77c04ac9927648ea58af617e472be96e6","https://git.kernel.org/stable/c/6f4c80a2a7e6d06753b89a578b710a2499a5e62b"],"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":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:51.545322Z"},"effective_severity":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","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":"H","value_label":"High"},{"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":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"7560afb8cddafd829e709d7ea09230e45a825557","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:7560afb8cddafd829e709d7ea09230e45a825557"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"512a9bb77c04ac9927648ea58af617e472be96e6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:512a9bb77c04ac9927648ea58af617e472be96e6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"6f4c80a2a7e6d06753b89a578b710a2499a5e62b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:6f4c80a2a7e6d06753b89a578b710a2499a5e62b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2.6.12","version_start_inclusive":true,"version_end":"2.6.12","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:2.6.12:2.6.12"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"2.6.12","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:2.6.12"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.36","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.36:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.13","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.13:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/7560afb8cddafd829e709d7ea09230e45a825557","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/512a9bb77c04ac9927648ea58af617e472be96e6","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/6f4c80a2a7e6d06753b89a578b710a2499a5e62b","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:39:25.254000Z","label":"CVE published","source":null}]}