{"id":"CVE-2026-97523","revision":"2b5225eed08645bf88f765d61e548a7f","records":[{"revision":"2b5225eed08645bf88f765d61e548a7f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97523","aliases":[],"title":"mptcp: close race between scheduler and state change","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: close race between scheduler and state change\n\nThe mptcp scheduler may race with subflow sockets state change: data\ntransmission on the selected socket may fail and a later release could\ntry to use mss_now reset to 0 for a divide operation.\n\nAddress the issue by explicitly checking for the critical scenario.","state":0,"publishedAt":"2026-09-25T10:21:27.042+00:00","modifiedAt":"2026-10-19T09:08:41.355+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/mptcp/protocol.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"fb9c73ef2ac2ec816efdc8b9267bc04e1369c20b\",\n                            \"lessThan\": \"d74b2e26b54a7dae1d87c1f19ae0d6db500e5e03\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c886d70286bf3ad411eb3d689328a67f7102c6ae\",\n                            \"lessThan\": \"5883ae880f51edc4b1484e787473b865b6159ead\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c886d70286bf3ad411eb3d689328a67f7102c6ae\",\n                            \"lessThan\": \"0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c886d70286bf3ad411eb3d689328a67f7102c6ae\",\n                            \"lessThan\": \"8f11430d51ff8365bc51b670bc3002b65ae4c6b7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c886d70286bf3ad411eb3d689328a67f7102c6ae\",\n                            \"lessThan\": \"a09c87abf10a0a7e203137c75b5381aa63d9b31d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c886d70286bf3ad411eb3d689328a67f7102c6ae\",\n                            \"lessThan\": \"4c856f3c151a2f3fa237caa651c44015916ca584\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c886d70286bf3ad411eb3d689328a67f7102c6ae\",\n                            \"lessThan\": \"42064de57fb83231fcc89663a94885f228a1ee53\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8caf5c15b5288d52d9c89374d6c10fa32ee84ec5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.15.190\",\n                            \"lessThan\": \"5.15.222\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.19.4\",\n                            \"lessThan\": \"5.20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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/mptcp/protocol.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\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:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/d74b2e26b54a7dae1d87c1f19ae0d6db500e5e03","https://git.kernel.org/stable/c/5883ae880f51edc4b1484e787473b865b6159ead","https://git.kernel.org/stable/c/0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0","https://git.kernel.org/stable/c/8f11430d51ff8365bc51b670bc3002b65ae4c6b7","https://git.kernel.org/stable/c/a09c87abf10a0a7e203137c75b5381aa63d9b31d","https://git.kernel.org/stable/c/4c856f3c151a2f3fa237caa651c44015916ca584","https://git.kernel.org/stable/c/42064de57fb83231fcc89663a94885f228a1ee53"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97523","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97523","identifiers":["CVE-2026-97523"]},"retained":false,"historicalAffected":[]}],"coverage":[]}