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CVE-2026-90219

Unknown

Last modified

CVE-2026-90219 is a vulnerability of currently unknown severity. 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..

Description

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 Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 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
LinuxLinux5.8

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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.
How severe is CVE-2026-90219?
Severity scoring for CVE-2026-90219 is pending analysis.
How do I fix CVE-2026-90219?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST