What is CVE-2026-90219?

CVE-2026-90219 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 4.19.130 onward and patched in 5.10.270, 5.15.221, 6.1.188 and others. CVE-2026-90219 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-90219?

CVE-2026-90219 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-90219?

Yes, CVE-2026-90219 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.188 and others. If you are running Linux kernel 4.19.130 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-90219 actively exploited?

CVE-2026-90219 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

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.

Package Linux Kernel

Published 2026-09-17

Last modified 2026-09-17

Patch available

Yes

Affected versions

Linux kernel versions 4.19.130, 5.4.49, 5.7.6, 5.8 and later are affected. Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6, 7.3-rc1 and their respective stable series.

Affected from

≥ 4.19.130 ≥ 5.4.49 ≥ 5.7.6 ≥ 5.8

Fixed in

✓ 5.10.270 5.10.x ✓ 5.15.221 5.15.x ✓ 6.1.188 6.1.x ✓ 6.6.157 6.6.x ✓ 6.12.110 6.12.x ✓ 6.18.52 6.18.x ✓ 7.2.6 7.2.x ✓ 7.3-rc1

References

8 total

Showing 5 of 8 references View all on NVD

Frequently asked questions

What is CVE-2026-90219?

CVE-2026-90219 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.19.130 onward and has been patched in 5.10.270, 5.15.221, 6.1.188 and others. CVE-2026-90219 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-90219?

Yes. CVE-2026-90219 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.188 and others. If you are running Linux kernel 4.19.130 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-90219 actively exploited?

No. CVE-2026-90219 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.