{"cve":{"cve_id":"CVE-2026-52909","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":0.00155,"epss_percentile":0.04934,"epss_as_of":"2026-06-23","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nip6_vti: set netns_immutable on the fallback device.\n\njohn1988 and Noam Rathaus reported that vti6_init_net() does not set the\nnetns_immutable flag on the per-netns fallback tunnel device (ip6_vti0).\n\nOther similar tunnel drivers (like ip6_tunnel, sit, ip6_gre, and ip_tunnel)\ncorrectly set this flag during their fallback device initialization to\nprevent them from being moved to another network 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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":"61220ab349485d911083d0b7990ccd3db6c63297","version_start_inclusive":true,"version_end":"ecf8904067dcba0dad86ece80874841e60317885","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:61220ab349485d911083d0b7990ccd3db6c63297:ecf8904067dcba0dad86ece80874841e60317885"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"61220ab349485d911083d0b7990ccd3db6c63297","version_start_inclusive":true,"version_end":"dcdce3bc9f08026ff3739ee7339e1bef526fc5f3","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:61220ab349485d911083d0b7990ccd3db6c63297:dcdce3bc9f08026ff3739ee7339e1bef526fc5f3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"61220ab349485d911083d0b7990ccd3db6c63297","version_start_inclusive":true,"version_end":"d289d5307762d1838aaece22c6b6fcad9e8865f9","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:61220ab349485d911083d0b7990ccd3db6c63297:d289d5307762d1838aaece22c6b6fcad9e8865f9"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"3.15","version_start_inclusive":true,"version_end":"3.15","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:3.15:3.15"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"3.15","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:3.15"},{"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/ecf8904067dcba0dad86ece80874841e60317885","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/dcdce3bc9f08026ff3739ee7339e1bef526fc5f3","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/d289d5307762d1838aaece22c6b6fcad9e8865f9","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-19T14:43:33.214000Z","label":"CVE 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