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CVE-2026-93109

RDMA/mlx5: Drain RCU callbacks during module teardown

N/A
Published: September 17, 2026 at 04:11 PM UTC
Updated: October 19, 2026 at 10:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
5.66898d1c661d79f4707d8ba82991b2195822780ca
Vendor states this is fixed in 2f946e7839f677fa14574b6babad14b37ae0bbbe (fixed)
Vendor states this is fixed in 4664368b9bd9d5d79ebad24056b98c34b9fed20f (fixed)
Vendor states this is fixed in 4be7810ba70291abb2f68cc6db0ae1b93ee9c76a (fixed)
Vendor states this is fixed in 59d60e04afd012f07e996d2e34cb90a4ec6f5cff (fixed)
Vendor states this is fixed in 7babc25d8dd5b7642920fbc0737cfd1469e7025b (fixed)
Vendor states this is fixed in ca428e597f12b278bf158356e34641e6386cfa82 (fixed)
Vendor states this is fixed in e37cdd75f8d61c1123d324ae5667ac3da562290e (fixed)
Vendor states this is fixed in 5.15.221 (unaffected)
Vendor states this is fixed in 5.6 (unaffected)
Vendor states this is fixed in 6.1.188 (unaffected)
Vendor states this is fixed in 6.12.110 (unaffected)
Vendor states this is fixed in 6.18.52 (unaffected)
Vendor states this is fixed in 6.6.157 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (7)

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

Quick Info

StatusRECEIVED

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