{"id":"CVE-2026-74469","revision":"585ff5015818440b89b6f1f9e5ee6819","records":[{"revision":"585ff5015818440b89b6f1f9e5ee6819","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74469","aliases":[],"title":"sctp: prevent peer transport count overflow","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: prevent peer transport count overflow\n\nsctp_assoc_add_peer() increments the association's 16-bit transport_count\nfor every new unique peer. Adding the 65,536th transport wraps the count to\nzero.\n\nSCTP sock_diag uses transport_count to reserve the INET_DIAG_PEERS payload,\nthen copies one sockaddr_storage for every entry in transport_addr_list.\nAfter the wrap, a diagnostic dump reserves an empty payload and writes\n8 MiB of peer addresses past the skb tail.\n\nReject a new unique peer when transport_count has reached U16_MAX. Perform\nthe check after the existing-peer lookup so a duplicate address continues\nto return its existing transport at the limit.","state":0,"publishedAt":"2026-08-15T12:27:06.873+00:00","modifiedAt":"2026-10-16T19:05:47.493+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/associola.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n                            \"lessThan\": \"b453e00da1211e997b82743d28af7714c59c05c8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n                            \"lessThan\": \"dfea32dd76f390e3155177b0038cc47b01386198\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n                            \"lessThan\": \"80f48523a0fe42db2e7375dff4e38a25c117090a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n                            \"lessThan\": \"546221b86ceeba0d8fec92d46a0604bb7b62be07\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n                            \"lessThan\": \"09e722030e8148ba4ed1e42c6b2ea57bda9f9895\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n                            \"lessThan\": \"4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n                            \"lessThan\": \"6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8f840e47f190cbe61a96945c13e9551048d42cef\",\n                            \"lessThan\": \"bd0e9289e2642f6a5c54faad304ce0f41e926d22\",\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/associola.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\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.151\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.103\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.44\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/b453e00da1211e997b82743d28af7714c59c05c8","https://git.kernel.org/stable/c/dfea32dd76f390e3155177b0038cc47b01386198","https://git.kernel.org/stable/c/80f48523a0fe42db2e7375dff4e38a25c117090a","https://git.kernel.org/stable/c/546221b86ceeba0d8fec92d46a0604bb7b62be07","https://git.kernel.org/stable/c/09e722030e8148ba4ed1e42c6b2ea57bda9f9895","https://git.kernel.org/stable/c/4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0","https://git.kernel.org/stable/c/6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75","https://git.kernel.org/stable/c/bd0e9289e2642f6a5c54faad304ce0f41e926d22"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74469","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74469","identifiers":["CVE-2026-74469"]},"retained":false,"historicalAffected":[]}],"coverage":[]}