CVE-2026-90219RDMA/cxgb4: Free debugfs on registration failure
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before 459b59f7ed56511d6529311cb4e5e482ebfcfb8e; from 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8; from 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before c332d9e7dce234d8bef78271d003a68ee943b61b; from 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before f98e894ec029a752cf9c7f7834741bead0fb463d; from 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before 479a7f90060e62bdd9bb4036ec0a70bf460f6d23; from 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before 046425412529dbfca1433c8bef5641b271b4ab2a; from 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before ea41b5630fa3d9877ce9ed8832cf5575f742bfbb; from 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before fe5c16bb6252dea6025b748257ddc3b2665495b0; and 6 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/459b59f7ed56511d6529311cb4e5e482ebfcfb8e
- https://git.kernel.org/stable/c/cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8
- https://git.kernel.org/stable/c/c332d9e7dce234d8bef78271d003a68ee943b61b
- https://git.kernel.org/stable/c/f98e894ec029a752cf9c7f7834741bead0fb463d
- https://git.kernel.org/stable/c/479a7f90060e62bdd9bb4036ec0a70bf460f6d23
- https://git.kernel.org/stable/c/046425412529dbfca1433c8bef5641b271b4ab2a
- https://git.kernel.org/stable/c/ea41b5630fa3d9877ce9ed8832cf5575f742bfbb
- https://git.kernel.org/stable/c/fe5c16bb6252dea6025b748257ddc3b2665495b0
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.