CVE-2026-90219
RDMA/cxgb4: Free debugfs on registration failure
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
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Affected Versions
Linux / Linux
49ea0c036ede81f126f1a9389d377999fdf5c5a1 < 459b59f7ed56511d6529311cb4e5e482ebfcfb8e 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < c332d9e7dce234d8bef78271d003a68ee943b61b 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < f98e894ec029a752cf9c7f7834741bead0fb463d 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < 479a7f90060e62bdd9bb4036ec0a70bf460f6d23 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < 046425412529dbfca1433c8bef5641b271b4ab2a 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < ea41b5630fa3d9877ce9ed8832cf5575f742bfbb 49ea0c036ede81f126f1a9389d377999fdf5c5a1 < fe5c16bb6252dea6025b748257ddc3b2665495b0 98fa991017981b52dcc4dc3924fc8e1e83e41bf4 af92e4a595e006b498c44b617ea38f697eca3469 9c0cec79e5c914662c2cf98b4a729c0fcc8c872e 4.19.130 < 4.20 5.4.49 < 5.5 5.7.6 < 5.8
Linux / Linux
5.8
References
git.kernel.org: https://git.kernel.org/stable/c/459b59f7ed56511d6529311cb4e5e482ebfcfb8e git.kernel.org: https://git.kernel.org/stable/c/cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8 git.kernel.org: https://git.kernel.org/stable/c/c332d9e7dce234d8bef78271d003a68ee943b61b git.kernel.org: https://git.kernel.org/stable/c/f98e894ec029a752cf9c7f7834741bead0fb463d git.kernel.org: https://git.kernel.org/stable/c/479a7f90060e62bdd9bb4036ec0a70bf460f6d23 git.kernel.org: https://git.kernel.org/stable/c/046425412529dbfca1433c8bef5641b271b4ab2a git.kernel.org: https://git.kernel.org/stable/c/ea41b5630fa3d9877ce9ed8832cf5575f742bfbb git.kernel.org: https://git.kernel.org/stable/c/fe5c16bb6252dea6025b748257ddc3b2665495b0