{"id":"CVE-2026-80987","revision":"8710aa7a1bce4e758893119a734fd247","records":[{"revision":"8710aa7a1bce4e758893119a734fd247","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80987","aliases":[],"title":"NTB: ntb_transport: Reject oversized TX buffers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nNTB: ntb_transport: Reject oversized TX buffers\n\nntb_process_tx() handles an oversized buffer by calling tx_handler()\nwith a NULL data pointer and returning success. ntb_netdev therefore\nneither frees the skb in its completion callback nor takes its enqueue\nerror path, leaking it.\n\nReject oversized buffers in ntb_transport_tx_enqueue() before acquiring\na queue entry and return -EMSGSIZE. The caller retains ownership of the\nbuffer, and the preceding netdev patch frees the skb when enqueue\nreturns this permanent error.","state":0,"publishedAt":"2026-09-11T19:42:45.574+00:00","modifiedAt":"2026-10-19T08:46:11.577+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                        \"drivers/ntb/ntb_transport.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"fce8a7bb5b4bfb8a27324703fd5b002ee9247e90\",\n                            \"lessThan\": \"4890152a3069f5cb58cc24b08cfd5fe95e568fa1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fce8a7bb5b4bfb8a27324703fd5b002ee9247e90\",\n                            \"lessThan\": \"668aa3238548584ca9772da9cf43ae8c2389bbf1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fce8a7bb5b4bfb8a27324703fd5b002ee9247e90\",\n                            \"lessThan\": \"9b0fa8a9e1057614a533cc3f18b17f82aab028d8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fce8a7bb5b4bfb8a27324703fd5b002ee9247e90\",\n                            \"lessThan\": \"b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fce8a7bb5b4bfb8a27324703fd5b002ee9247e90\",\n                            \"lessThan\": \"a7f22105a7df8c7fd74d0af27ace6fa94fe03d87\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fce8a7bb5b4bfb8a27324703fd5b002ee9247e90\",\n                            \"lessThan\": \"6b6bbc6c878d64eacc60877df49fce7b1b6a08d0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fce8a7bb5b4bfb8a27324703fd5b002ee9247e90\",\n                            \"lessThan\": \"75a604e9f1cfdebda421062fdf42225ca32154cd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fce8a7bb5b4bfb8a27324703fd5b002ee9247e90\",\n                            \"lessThan\": \"a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7\",\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                        \"drivers/ntb/ntb_transport.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.9\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\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/4890152a3069f5cb58cc24b08cfd5fe95e568fa1","https://git.kernel.org/stable/c/668aa3238548584ca9772da9cf43ae8c2389bbf1","https://git.kernel.org/stable/c/9b0fa8a9e1057614a533cc3f18b17f82aab028d8","https://git.kernel.org/stable/c/b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88","https://git.kernel.org/stable/c/a7f22105a7df8c7fd74d0af27ace6fa94fe03d87","https://git.kernel.org/stable/c/6b6bbc6c878d64eacc60877df49fce7b1b6a08d0","https://git.kernel.org/stable/c/75a604e9f1cfdebda421062fdf42225ca32154cd","https://git.kernel.org/stable/c/a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80987","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80987","identifiers":["CVE-2026-80987"]},"retained":false,"historicalAffected":[]}],"coverage":[]}