{"id":"CVE-2026-90219","title":"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->debugfs_root via\nsetup_debugfs()), but it is removed only in c4…","summary":"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->debugfs_root via\nsetup_debugfs()), but it is removed only in c4…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < 459b59f7ed56511d6529311cb4e5e482ebfcfb8e","Linux >= 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8","Linux >= 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < c332d9e7dce234d8bef78271d003a68ee943b61b","Linux >= 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < f98e894ec029a752cf9c7f7834741bead0fb463d","Linux >= 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < 479a7f90060e62bdd9bb4036ec0a70bf460f6d23","Linux >= 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < 046425412529dbfca1433c8bef5641b271b4ab2a","Linux >= 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < ea41b5630fa3d9877ce9ed8832cf5575f742bfbb","Linux >= 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < fe5c16bb6252dea6025b748257ddc3b2665495b0","Linux 98fa991017981b52dcc4dc3924fc8e1e83e41bf4","Linux af92e4a595e006b498c44b617ea38f697eca3469","Linux 9c0cec79e5c914662c2cf98b4a729c0fcc8c872e","Linux >= 4.19.130 < 4.20","Linux >= 5.4.49 < 5.5","Linux >= 5.7.6 < 5.8","Linux 5.8"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:17.290","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90219","references":[{"url":"https://git.kernel.org/stable/c/046425412529dbfca1433c8bef5641b271b4ab2a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/459b59f7ed56511d6529311cb4e5e482ebfcfb8e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/479a7f90060e62bdd9bb4036ec0a70bf460f6d23","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c332d9e7dce234d8bef78271d003a68ee943b61b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ea41b5630fa3d9877ce9ed8832cf5575f742bfbb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f98e894ec029a752cf9c7f7834741bead0fb463d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fe5c16bb6252dea6025b748257ddc3b2665495b0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.855Z","epss":0.00221,"epssPercentile":0.12908,"slug":"CVE-2026-90219","body":"## Overview\n\nIn 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->debugfs_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->dev also removes its debugfs tree.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}