{"cve":{"cve_id":"CVE-2026-53228","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\nipv6: sit: reload inner IPv6 header after GSO offloads\n\nipip6_tunnel_xmit() caches the inner IPv6 header pointer at function\nentry and continues using it after iptunnel_handle_offloads().\n\nFor GSO skbs, iptunnel_handle_offloads() calls skb_header_unclone().\nWhen the skb header is cloned, skb_header_unclone() can call\npskb_expand_head(), which may move the skb head. The pskb_expand_head()\ncontract requires pointers into the skb header to be reloaded after the\ncall.\n\nIf the later skb_realloc_headroom() branch is not taken, SIT uses the\nstale iph6 pointer to read the inner hop limit and DS field. That can\nread from a freed skb head after the old head's remaining clone is\nreleased.\n\nReload iph6 after the offload helper succeeds and before subsequent\nreads from the inner IPv6 header. Keep the existing reload after\nskb_realloc_headroom(), since that branch can also replace the skb.","published_at":"2026-06-25T08:39:27.893000Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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/fddd41445a0537b093e6b3f6232c9933cad1e48b","https://git.kernel.org/stable/c/1132e5edc2866c3530be17622153a597095f0e43","https://git.kernel.org/stable/c/9c67b44edb3598d234efae6e44649eb993c03da5","https://git.kernel.org/stable/c/0bfa7bba1f41aaf5f0604dc712bb4701493e3aa0","https://git.kernel.org/stable/c/59f80c919713250fe5d25a4d9aea4e49580fa1d4","https://git.kernel.org/stable/c/2fa49b2715e1bad12ce3b0fa64e234d9582c8193","https://git.kernel.org/stable/c/cb658c2f5f7977c2a1c77c9f239f4bc8196edb5c","https://git.kernel.org/stable/c/f0e42f0c4337b1f220de1ddd63f47197c7dee4de"],"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":"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","product_name":"Linux","version_start":"14909664e4e192f4c6f6fcdccd9919af7cf783ab","version_start_inclusive":true,"version_end":"fddd41445a0537b093e6b3f6232c9933cad1e48b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:14909664e4e192f4c6f6fcdccd9919af7cf783ab:fddd41445a0537b093e6b3f6232c9933cad1e48b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"14909664e4e192f4c6f6fcdccd9919af7cf783ab","version_start_inclusive":true,"version_end":"1132e5edc2866c3530be17622153a597095f0e43","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:14909664e4e192f4c6f6fcdccd9919af7cf783ab:1132e5edc2866c3530be17622153a597095f0e43"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"14909664e4e192f4c6f6fcdccd9919af7cf783ab","version_start_inclusive":true,"version_end":"9c67b44edb3598d234efae6e44649eb993c03da5","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:14909664e4e192f4c6f6fcdccd9919af7cf783ab:9c67b44edb3598d234efae6e44649eb993c03da5"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"14909664e4e192f4c6f6fcdccd9919af7cf783ab","version_start_inclusive":true,"version_end":"0bfa7bba1f41aaf5f0604dc712bb4701493e3aa0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:14909664e4e192f4c6f6fcdccd9919af7cf783ab:0bfa7bba1f41aaf5f0604dc712bb4701493e3aa0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"14909664e4e192f4c6f6fcdccd9919af7cf783ab","version_start_inclusive":true,"version_end":"59f80c919713250fe5d25a4d9aea4e49580fa1d4","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:14909664e4e192f4c6f6fcdccd9919af7cf783ab:59f80c919713250fe5d25a4d9aea4e49580fa1d4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"14909664e4e192f4c6f6fcdccd9919af7cf783ab","version_start_inclusive":true,"version_end":"2fa49b2715e1bad12ce3b0fa64e234d9582c8193","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:14909664e4e192f4c6f6fcdccd9919af7cf783ab:2fa49b2715e1bad12ce3b0fa64e234d9582c8193"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"14909664e4e192f4c6f6fcdccd9919af7cf783ab","version_start_inclusive":true,"version_end":"cb658c2f5f7977c2a1c77c9f239f4bc8196edb5c","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:14909664e4e192f4c6f6fcdccd9919af7cf783ab:cb658c2f5f7977c2a1c77c9f239f4bc8196edb5c"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"14909664e4e192f4c6f6fcdccd9919af7cf783ab","version_start_inclusive":true,"version_end":"f0e42f0c4337b1f220de1ddd63f47197c7dee4de","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:14909664e4e192f4c6f6fcdccd9919af7cf783ab:f0e42f0c4337b1f220de1ddd63f47197c7dee4de"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"3.18","version_start_inclusive":true,"version_end":"3.18","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:3.18:3.18"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"3.18","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:3.18"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.10.259","version_start_inclusive":true,"version_end":"5.10.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.10.259:5.10.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15.210","version_start_inclusive":true,"version_end":"5.15.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15.210:5.15.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.176","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.176:6.1.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.143","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.143:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.94","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.94:6.12.*"},{"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/fddd41445a0537b093e6b3f6232c9933cad1e48b","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/1132e5edc2866c3530be17622153a597095f0e43","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/9c67b44edb3598d234efae6e44649eb993c03da5","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/0bfa7bba1f41aaf5f0604dc712bb4701493e3aa0","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/59f80c919713250fe5d25a4d9aea4e49580fa1d4","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/2fa49b2715e1bad12ce3b0fa64e234d9582c8193","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/cb658c2f5f7977c2a1c77c9f239f4bc8196edb5c","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/f0e42f0c4337b1f220de1ddd63f47197c7dee4de","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:39:27.893000Z","label":"CVE published","source":null}]}