{"id":"CVE-2026-52917","revision":"ca78e5651f4b4beab2662bc6762e1977","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happens, inet_assoc_attr_size() and\ninet_diag_msg_sctpasoc_fill() can still dereference association state\nthat is no longer valid for reporting.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":[]}