{"id":"CVE-2026-80988","summary":"NTB: ntb_transport: Fail TX enqueue when the QP link is down","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nNTB: ntb_transport: Fail TX enqueue when the QP link is down\n\nCommit f195a1a6fe41 (\"ntb: Drop packets when qp link is down\") meant to\nmake ntb_transport_tx_enqueue() drop packets submitted while the QP link\nis down, but it only returns 0 without consuming the packet. Zero means\nsuccess by this function's contract, so ntb_netdev reports NETDEV_TX_OK\nand forgets the skb: nothing queued it, nothing frees it, and it leaks,\none skb for every transmit racing a link-down.\n\nReturn -ENOLINK instead, restoring the contract that a non-zero return\nleaves the buffer owned by the caller. With the preceding patch,\nntb_netdev frees the skb on non-retryable enqueue failures and returns\nNETDEV_TX_OK, so a packet racing with link-down is dropped without leaking\nor entering a busy retry loop.","modified":"2026-11-13T04:07:01.805684504Z","published":"2026-09-11T19:42:46.228Z","related":["SUSE-SU-2026:24550-1","SUSE-SU-2026:24619-1","SUSE-SU-2026:24643-1","SUSE-SU-2026:24648-1","SUSE-SU-2026:24651-1","SUSE-SU-2026:24662-1","openSUSE-SU-2026:11805-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80988.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/45cc11035165918dd1f81796ea98f81ece20d361"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5eca0d899a3be661a7e2caaaa7467a6fa15d756c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/76c9ccc0c6bebfc74c0e727eda67687f5103ab06"},{"type":"WEB","url":"https://git.kernel.org/stable/c/873ce713fef5dde0939220f04f3484ec86a16fba"},{"type":"WEB","url":"https://git.kernel.org/stable/c/89177732fe1653bbfef10cf5d99bf20cf57762c2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/894e136b432da75c0352c80299807a5c4b04f167"},{"type":"WEB","url":"https://git.kernel.org/stable/c/96d792c65b9d5f7f9dd86a1004315db59e450c07"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e6cc541fab01099fd8efadfa4f13afdf118bf536"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80988.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80988"},{"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":"3cfdc448e8bfa8a7eaa5af87f357330566124b78"},{"fixed":"76c9ccc0c6bebfc74c0e727eda67687f5103ab06"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"bfa051f650a7708183bd86901ca4645dcf88c486"},{"fixed":"96d792c65b9d5f7f9dd86a1004315db59e450c07"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4f4af6b8b7a23fa37decaf43b55403e6bfd8e219"},{"fixed":"45cc11035165918dd1f81796ea98f81ece20d361"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f195a1a6fe416882984f8bd6c61afc1383171860"},{"fixed":"e6cc541fab01099fd8efadfa4f13afdf118bf536"},{"fixed":"5eca0d899a3be661a7e2caaaa7467a6fa15d756c"},{"fixed":"894e136b432da75c0352c80299807a5c4b04f167"},{"fixed":"89177732fe1653bbfef10cf5d99bf20cf57762c2"},{"fixed":"873ce713fef5dde0939220f04f3484ec86a16fba"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"aa6d6ed213b62cbdb09ea32abbfa085dd987a0c9"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a8986a61ebee0b54c5d648444fbae09bd1c6dcd2"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"94491412a2afc8a5aea4c5b455aed86d3486f0b1"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c2cd5d993f57f819d46fe62387d3cc34d8468e60"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"449b1978d4e50b14b2a4de3a26d0b074593926a3"}]}],"versions":["v5.10.269","v5.10.268","v5.10.267","v5.10.266","v5.10.265","v5.10.264","v5.10.263","v5.10.262","v5.10.261","v5.10.260","v5.10.259","v5.10.258","v5.10.257","v5.10.256","v5.10.255","v5.10.254","v5.10.253","v5.10.252","v5.10.251","v5.10.250","v5.10.249","v5.10.248","v5.10.247","v5.10.246","v5.10.245","v5.10.244","v5.10.243","v5.10.242","v5.10.241","v5.10.240","v5.10.239","v5.10.238","v5.10.237","v5.10.236","v5.10.235","v5.10.234","v5.10.233","v5.10.232","v5.10.231","v5.10.230","v5.10.229","v5.10.228","v5.10.227","v5.10.226","v5.10.225","v5.10.224","v5.10.223","v5.10.222","v5.10.221","v5.10.220","v5.10.219","v5.10.218","v5.10.217","v5.10.216","v5.10.215","v5.10.214","v5.10.213","v5.10.212","v5.10.211","v5.10.210","v5.10.209","v5.10.208","v5.10.207","v5.10.206","v5.10.205","v5.10.204","v5.10.203","v5.10.202","v5.10.201","v5.10.200","v5.10.199","v5.10.198","v5.10.197","v5.10.196","v5.10.195","v5.15.220","v5.15.219","v5.15.218","v5.15.217","v5.15.216","v5.15.215","v5.15.214","v5.15.213","v5.15.212","v5.15.211","v5.15.210","v5.15.209","v5.15.208","v5.15.207","v5.15.206","v5.15.205","v5.15.204","v5.15.203","v5.15.202","v5.15.201","v5.15.200","v5.15.199","v5.15.198","v5.15.197","v5.15.196","v5.15.195","v5.15.194","v5.15.193","v5.15.192","v5.15.191","v5.15.190","v5.15.189","v5.15.188","v5.15.187","v5.15.186","v5.15.185","v5.15.184","v5.15.183","v5.15.182","v5.15.181","v5.15.180","v5.15.179","v5.15.178","v5.15.177","v5.15.176","v5.15.175","v5.15.174","v5.15.173","v5.15.172","v5.15.171","v5.15.170","v5.15.169","v5.15.168","v5.15.167","v5.15.166","v5.15.165","v5.15.164","v5.15.163","v5.15.162","v5.15.161","v5.15.160",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