{"id":"CVE-2026-90219","summary":"RDMA/cxgb4: Free debugfs on registration failure","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cxgb4: Free debugfs on registration failure\n\nc4iw_alloc() creates the per-device debugfs tree (dev-\u003edebugfs_root via\nsetup_debugfs()), but it is removed only in c4iw_remove(), not in\nc4iw_dealloc().  When RDMA device registration fails, the registration\nworker's err_dealloc_ctx path calls c4iw_dealloc() directly, bypassing\nc4iw_remove(), so the debugfs dentries leak and outlive the freed\nc4iw_dev.\n\nMove debugfs_remove_recursive() into c4iw_dealloc() so every path that\nfrees ctx-\u003edev also removes its debugfs tree.","modified":"2026-09-19T03:47:25.552773698Z","published":"2026-09-17T16:07:30.778Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90219.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/046425412529dbfca1433c8bef5641b271b4ab2a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/459b59f7ed56511d6529311cb4e5e482ebfcfb8e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/479a7f90060e62bdd9bb4036ec0a70bf460f6d23"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c332d9e7dce234d8bef78271d003a68ee943b61b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ea41b5630fa3d9877ce9ed8832cf5575f742bfbb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f98e894ec029a752cf9c7f7834741bead0fb463d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fe5c16bb6252dea6025b748257ddc3b2665495b0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90219.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90219"},{"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":"49ea0c036ede81f126f1a9389d377999fdf5c5a1"},{"fixed":"459b59f7ed56511d6529311cb4e5e482ebfcfb8e"},{"fixed":"cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8"},{"fixed":"c332d9e7dce234d8bef78271d003a68ee943b61b"},{"fixed":"f98e894ec029a752cf9c7f7834741bead0fb463d"},{"fixed":"479a7f90060e62bdd9bb4036ec0a70bf460f6d23"},{"fixed":"046425412529dbfca1433c8bef5641b271b4ab2a"},{"fixed":"ea41b5630fa3d9877ce9ed8832cf5575f742bfbb"},{"fixed":"fe5c16bb6252dea6025b748257ddc3b2665495b0"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"98fa991017981b52dcc4dc3924fc8e1e83e41bf4"},{"last_affected":"af92e4a595e006b498c44b617ea38f697eca3469"},{"last_affected":"9c0cec79e5c914662c2cf98b4a729c0fcc8c872e"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.19.130"},{"fixed":"4.20"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.4.49"},{"fixed":"5.5"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.7.6"},{"fixed":"5.8"}]}],"versions":["v5.7","v5.7-rc4","v4.19.129","v5.4.48","v5.7.5","v5.7.4","v5.4.47","v4.19.128","v5.7.3","v5.7.2","v5.4.46","v4.19.127","v5.4.45","v5.7.1","v5.4.44","v4.19.126","v5.7-rc7","v5.7-rc1","v5.4.43","v4.19.125","v5.7-rc3","v5.7-rc2","v5.7-rc5","v5.4.42","v4.19.124","v5.7-rc6","v5.4.41","v4.19.123","v5.4.40","v4.19.122","v5.6","v5.4.39","v4.19.121","v5.4.38","v4.19.120","v5.4.37","v4.19.119","v5.4.36","v5.4.35","v4.19.118","v5.4.34","v4.19.117","v5.4.33","v4.19.116","v5.4.32","v4.19.115","v5.4.31","v4.19.114","v5.4.30","v5.6-rc1","v4.19.113","v5.4.29","v5.4.28","v5.6-rc7","v5.6-rc6","v5.6-rc3","v5.6-rc4","v5.6-rc2","v5.6-rc5","v5.4.27","v4.19.112","v5.4.26","v4.19.111","v5.4.25","v4.19.110","v4.19.109","v5.4.24","v4.19.108","v5.4.23","v4.19.107","v5.4.22","v4.19.106","v5.4.21","v4.19.105","v5.4.20","v4.19.104","v5.4.19","v4.19.103","v5.4.18","v4.19.102","v5.5","v5.4.17","v4.19.101","v5.5-rc5","v4.19.100","v5.4.16","v5.5-rc7","v5.5-rc2","v5.5-rc1","v5.4.15","v4.19.99","v5.4","v4.19.98","v5.4.14","v5.5-rc4","v5.4.13","v4.19.97","v5.5-rc3","v5.5-rc6","v5.4.12","v4.19.96","v5.4.11","v4.19.95","v5.4.10","v4.19.94","v5.4.9","v5.4.8","v4.19.93","v5.4.7","v4.19.92","v5.4.6","v4.19.91","v5.4.5","v4.19.90","v5.4.4","v4.19.89","v5.4.3","v4.19.88","v5.4.2","v5.4-rc1","v4.19.87","v5.4.1","v5.4-rc6","v5.4-rc3","v4.19.86","v5.4-rc4","v5.4-rc8","v4.19.85","v4.19.84","v5.4-rc7","v5.4-rc5","v5.3","v5.4-rc2","v4.19.83","v4.19.82","v4.19.81","v4.19.80","v4.19.79","v4.19.78","v4.19.77","v4.19.76","v4.19.75","v5.3-rc5","v5.3-rc1","v4.19.74","v5.3-rc2","v4.19.73","v5.3-rc3","v5.3-rc8","v4.19.72","v5.3-rc7","v5.3-rc4","v4.19.71","v4.19.70","v4.19.69","v5.2","v5.3-rc6","v4.19.68","v4.19.67","v4.19.66","v4.19.65","v4.19.64","v4.19.63","v4.19.62","v4.19.61","v4.19.60","v5.2-rc2","v4.19.59","v5.2-rc7","v5.2-rc4","v4.19.58","v5.2-rc1","v4.19.57","v5.2-rc5","v5.2-rc6","v4.19.56","v5.2-rc3","v4.19.55","v5.1","v4.19.54","v4.19.53","v4.19.52","v4.19.51","v4.19.50","v4.19.49","v4.19.48","v4.19.47","v4.19.46","v4.19.45","v4.19.44","v4.19.43","v5.0-rc8","v4.19.42","v5.1-rc7","v5.1-rc1","v4.19.41","v5.1-rc6","v4.19.40","v5.1-rc5","v4.19.39","v4.19.38","v5.0","v4.19.37","v5.1-rc3","v4.19.36","v5.1-rc2","v4.19.35","v5.1-rc4","v4.19.34","v5.0-rc1","v4.19.33","v4.19.32","v4.19.31","v4.19.30","v4.19.29","v4.19.28","v4.19.27","v4.19.26","v5.0-rc4","v5.0-rc3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