CVE-2026-93109

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Drain RCU callbacks during module teardown devx_free_subscription() can remain queued after the last DevX event file drops its module reference or an auxiliary driver detaches its devices. mlx5_ib can then unload before the callback runs. Registration error unwind has the same risk because driver registration can attach existing devices before failing. Wait after all drivers have stopped.

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EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/2f946e7839f677fa14574b6babad14b37ae0bbbe https://git.kernel.org/stable/c/4664368b9bd9d5d79ebad24056b98c34b9fed20f https://git.kernel.org/stable/c/4be7810ba70291abb2f68cc6db0ae1b93ee9c76a https://git.kernel.org/stable/c/59d60e04afd012f07e996d2e34cb90a4ec6f5cff https://git.kernel.org/stable/c/7babc25d8dd5b7642920fbc0737cfd1469e7025b https://git.kernel.org/stable/c/ca428e597f12b278bf158356e34641e6386cfa82 https://git.kernel.org/stable/c/e37cdd75f8d61c1123d324ae5667ac3da562290e

Frequently Asked Questions

What is CVE-2026-93109? +

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Drain RCU callbacks during module teardown devx_free_subscription() can remain queued after the last DevX event file drops its module reference or an auxiliary driver detaches its devices. mlx5_ib can then unload before the callback runs. Registration error unwind has the same risk because driver registration can attach existing devices before failing. Wait after all drivers have stopped.

How do I check if I'm vulnerable to CVE-2026-93109? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.