{"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":"medium","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"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90219.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90219"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536321"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90219"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90219"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90219.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-17T16:21:47.855Z","epss":0.00227,"epssPercentile":0.13364,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-772"],"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.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90219.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":216338,"id":"CVE-2026-90219","ts":1791274098823,"field":"cvss","old":null,"new":"5.5"},{"seq":216337,"id":"CVE-2026-90219","ts":1791274098823,"field":"severity","old":"none","new":"medium"}]}