{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52909", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.366Z", "datePublished": "2026-06-19T14:43:33.214Z", "dateUpdated": "2026-06-19T14:43:33.214Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-19T14:43:33.214Z"}, "descriptions": [{"lang": "en", "value": "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 namespace."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/ip6_vti.c"], "versions": [{"version": "61220ab349485d911083d0b7990ccd3db6c63297", "lessThan": "ecf8904067dcba0dad86ece80874841e60317885", "status": "affected", "versionType": "git"}, {"version": "61220ab349485d911083d0b7990ccd3db6c63297", "lessThan": "dcdce3bc9f08026ff3739ee7339e1bef526fc5f3", "status": "affected", "versionType": "git"}, {"version": "61220ab349485d911083d0b7990ccd3db6c63297", "lessThan": "d289d5307762d1838aaece22c6b6fcad9e8865f9", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/ip6_vti.c"], "versions": [{"version": "3.15", "status": "affected"}, {"version": "0", "lessThan": "3.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ecf8904067dcba0dad86ece80874841e60317885"}, {"url": "https://git.kernel.org/stable/c/dcdce3bc9f08026ff3739ee7339e1bef526fc5f3"}, {"url": "https://git.kernel.org/stable/c/d289d5307762d1838aaece22c6b6fcad9e8865f9"}], "title": "ip6_vti: set netns_immutable on the fallback device.", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{}

{}