Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before 459b59f7ed56511d6529311cb4e5e482ebfcfb8e; affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8; affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before c332d9e7dce234d8bef78271d003a68ee943b61b; affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before f98e894ec029a752cf9c7f7834741bead0fb463d; affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before 479a7f90060e62bdd9bb4036ec0a70bf460f6d23; affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before 046425412529dbfca1433c8bef5641b271b4ab2a; affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before ea41b5630fa3d9877ce9ed8832cf5575f742bfbb; affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 before fe5c16bb6252dea6025b748257ddc3b2665495b0; affected 98fa991017981b52dcc4dc3924fc8e1e83e41bf4; affected af92e4a595e006b498c44b617ea38f697eca3469; affected 9c0cec79e5c914662c2cf98b4a729c0fcc8c872e; affected 4.19.130 before 4.20; affected 5.4.49 before 5.5; affected 5.7.6 before 5.8 |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
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