{"id":"CVE-2026-80588","revision":null,"records":[{"revision":"c13ad254c0714d95a98da0da08044892","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80588","aliases":[],"title":"mptcp: reclaim forward-allocated memory on RX path errors","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: reclaim forward-allocated memory on RX path errors\n\nAfter commit 9db5b3cec4ec (\"mptcp: borrow forward memory from subflow\"),\nerrors in the receive path prior to queueing skbs into the receive\nqueue do not trigger forward-allocated memory reclaiming.\n\nPrevent forward memory from growing unboundedly in pathological drop\nscenarios by explicitly reclaiming memory when skbs are dropped.","state":0,"publishedAt":"2026-08-26T14:37:42.685+00:00","modifiedAt":"2026-10-16T19:26:28.92+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\": \"a84164847b1e0a106ebc46821e5d2f9b775c9dc8\",\n                            \"lessThan\": \"473f1a5ab2abc98dd9e74b95b9c23c66c47535cc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9db5b3cec4ec1c0cd3239689f5c8653d691a1754\",\n                            \"lessThan\": \"8277f48a06d3aa1441f6d0b6998ccc0360d30ed8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9db5b3cec4ec1c0cd3239689f5c8653d691a1754\",\n                            \"lessThan\": \"41b49a8b914ec7dcb03eae93fb27f3c464078644\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.18.35\",\n                            \"lessThan\": \"6.18.46\",\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\": \"6.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.46\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.10\",\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:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/473f1a5ab2abc98dd9e74b95b9c23c66c47535cc","https://git.kernel.org/stable/c/8277f48a06d3aa1441f6d0b6998ccc0360d30ed8","https://git.kernel.org/stable/c/41b49a8b914ec7dcb03eae93fb27f3c464078644"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80588","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80588","identifiers":["CVE-2026-80588"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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