CVE-2026-90219RDMA/cxgb4: Free debugfs on registration failure
- —Not scoredno CVSS score yet
- 0.23%Exploitation in 30 daysEPSS · top 86% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 32 days later
· 32 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.23% · top 86% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 – < 459b59f7ed56511d6529311cb4e5e482ebfcfb8e
- affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 – < cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8
- affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 – < c332d9e7dce234d8bef78271d003a68ee943b61b
- affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 – < f98e894ec029a752cf9c7f7834741bead0fb463d
- affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 – < 479a7f90060e62bdd9bb4036ec0a70bf460f6d23
- affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 – < 046425412529dbfca1433c8bef5641b271b4ab2a
- affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 – < ea41b5630fa3d9877ce9ed8832cf5575f742bfbb
- affected 49ea0c036ede81f126f1a9389d377999fdf5c5a1 – < fe5c16bb6252dea6025b748257ddc3b2665495b0
- affected 98fa991017981b52dcc4dc3924fc8e1e83e41bf4
- affected af92e4a595e006b498c44b617ea38f697eca3469
- affected 9c0cec79e5c914662c2cf98b4a729c0fcc8c872e
- affected 4.19.130 – < 4.20
- affected 5.4.49 – < 5.5
- affected 5.7.6 – < 5.8
- affected 5.8
- unaffected < 5.8
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/459b59f7ed56511d6529311cb4e5e482ebfcfb8e (opens in a new tab)
- https://git.kernel.org/stable/c/cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8 (opens in a new tab)
- https://git.kernel.org/stable/c/c332d9e7dce234d8bef78271d003a68ee943b61b (opens in a new tab)
- https://git.kernel.org/stable/c/f98e894ec029a752cf9c7f7834741bead0fb463d (opens in a new tab)
- https://git.kernel.org/stable/c/479a7f90060e62bdd9bb4036ec0a70bf460f6d23 (opens in a new tab)
- https://git.kernel.org/stable/c/046425412529dbfca1433c8bef5641b271b4ab2a (opens in a new tab)
- https://git.kernel.org/stable/c/ea41b5630fa3d9877ce9ed8832cf5575f742bfbb (opens in a new tab)
- https://git.kernel.org/stable/c/fe5c16bb6252dea6025b748257ddc3b2665495b0 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-81812 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-90219)Record last updated .