{"id":"CVE-2026-52917","revision":null,"records":[{"revision":"ca78e5651f4b4beab2662bc6762e1977","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-52917","aliases":[],"title":"sctp: diag: reject stale associations in dump_one path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: diag: reject stale associations in dump_one path\n\nThe SCTP exact sock_diag lookup can hold a transport reference, block on\nlock_sock(sk), and then resume after sctp_association_free() has marked\nthe association dead and freed its bind address list.\n\nWhen that happens, inet_assoc_attr_size() and\ninet_diag_msg_sctpasoc_fill() can still dereference association state\nthat is no longer valid for reporting. In particular,\ninet_diag_msg_sctpasoc_fill() may read an empty bind-address list as a\nreal sctp_sockaddr_entry and trigger an out-of-bounds read from\nunrelated association memory.\n\nReject the association after taking the socket lock if it has been\nreaped or detached from the endpoint, and report the lookup as stale.\nThis keeps the exact dump-one path from formatting torn association\nstate.","state":0,"publishedAt":"2026-06-24T07:14:13.886+00:00","modifiedAt":"2026-10-19T19:37:00.367+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/sctp/diag.c\"\n ],\n \"versions\": [\n {\n \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n \"lessThan\": \"6657af827e21883ae90693e42e7f59a6aab690b5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n \"lessThan\": \"b2be72d401833194917e44fbd8d8144bb4f2db16\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n \"lessThan\": \"5425de8bd6e9fe5bd67d158e3348171ae7510117\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n \"lessThan\": \"e97c2a535e23ed0fdd2660993fb3f10d9535c9bc\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n \"lessThan\": \"480f754580b5686b928977d16a59f20cef83ff01\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n \"lessThan\": \"78c4f964b2f94e405721c093773f6250e1e676b2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n \"lessThan\": \"f5af203dec6e0e7a6090fcc2130e9f3901bfc84d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n \"lessThan\": \"5eba3e48d78edd7551b992cb7ba687019b3a78da\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/sctp/diag.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.7\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.7\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.259\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.210\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.176\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.143\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.94\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.36\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.13\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/6657af827e21883ae90693e42e7f59a6aab690b5","https://git.kernel.org/stable/c/b2be72d401833194917e44fbd8d8144bb4f2db16","https://git.kernel.org/stable/c/5425de8bd6e9fe5bd67d158e3348171ae7510117","https://git.kernel.org/stable/c/e97c2a535e23ed0fdd2660993fb3f10d9535c9bc","https://git.kernel.org/stable/c/480f754580b5686b928977d16a59f20cef83ff01","https://git.kernel.org/stable/c/78c4f964b2f94e405721c093773f6250e1e676b2","https://git.kernel.org/stable/c/f5af203dec6e0e7a6090fcc2130e9f3901bfc84d","https://git.kernel.org/stable/c/5eba3e48d78edd7551b992cb7ba687019b3a78da"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-52917","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-52917","identifiers":["CVE-2026-52917"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-f1b70ba09149408c9b3f93f80725b8b9","complete":true,"records":13654,"lastAttemptAt":"2026-11-08T19:48:04.0257169+00:00","lastSuccessAt":"2026-11-08T19:48:04.022+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:48:04.022+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-08T19:47:20.1649891+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-08T19:47:20.1649891+00:00","lastSuccessAt":"2026-11-08T19:47:20.3951142+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:20.3951146+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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