{"id":"CVE-2026-80987","summary":"NTB: ntb_transport: Reject oversized TX buffers","details":"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.","modified":"2026-09-13T03:47:10.027614897Z","published":"2026-09-11T19:42:45.574Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80987.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6b6bbc6c878d64eacc60877df49fce7b1b6a08d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/75a604e9f1cfdebda421062fdf42225ca32154cd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a7f22105a7df8c7fd74d0af27ace6fa94fe03d87"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80987.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80987"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"fce8a7bb5b4bfb8a27324703fd5b002ee9247e90"},{"fixed":"a7f22105a7df8c7fd74d0af27ace6fa94fe03d87"},{"fixed":"6b6bbc6c878d64eacc60877df49fce7b1b6a08d0"},{"fixed":"75a604e9f1cfdebda421062fdf42225ca32154cd"},{"fixed":"a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80987.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.9.0"},{"fixed":"6.12.109"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80987.json"}}],"schema_version":"1.9.0"}