CVE-2026-90219

In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Free debugfs on registration failure c4iw_alloc() creates the per-device debugfs tree (dev->debugfs_root via setup_debugfs()), but it is removed only in c4iw_remove(), not in c4iw_dealloc(). When RDMA device registration fails, the registration worker's err_dealloc_ctx path calls c4iw_dealloc() directly, bypassing c4iw_remove(), so the debugfs dentries leak and outlive the freed c4iw_dev. Move debugfs_remove_recursive() into c4iw_dealloc() so every path that frees ctx->dev also removes its debugfs tree.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/046425412529dbfca1433c8bef5641b271b4ab2a
https://git.kernel.org/stable/c/459b59f7ed56511d6529311cb4e5e482ebfcfb8e
https://git.kernel.org/stable/c/479a7f90060e62bdd9bb4036ec0a70bf460f6d23
https://git.kernel.org/stable/c/c332d9e7dce234d8bef78271d003a68ee943b61b
https://git.kernel.org/stable/c/cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8
https://git.kernel.org/stable/c/ea41b5630fa3d9877ce9ed8832cf5575f742bfbb
https://git.kernel.org/stable/c/f98e894ec029a752cf9c7f7834741bead0fb463d
https://git.kernel.org/stable/c/fe5c16bb6252dea6025b748257ddc3b2665495b0

Configurations

No configuration.

History

17 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:17

Updated : 2026-09-17 17:17

NVD link : CVE-2026-90219

Mitre link : CVE-2026-90219

CVE.ORG link : CVE-2026-90219

JSON object : View

Products Affected

No product.

CWE

No CWE.

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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."}], "lastModified": "2026-09-17T17:17:17.290", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}