CVE-2026-93109

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux6898d1c661d79f4707d8ba82991b2195822780ca < ca428e597f12b278bf158356e34641e6386cfa82affected
LinuxLinux6898d1c661d79f4707d8ba82991b2195822780ca < 59d60e04afd012f07e996d2e34cb90a4ec6f5cffaffected
LinuxLinux6898d1c661d79f4707d8ba82991b2195822780ca < 2f946e7839f677fa14574b6babad14b37ae0bbbeaffected
LinuxLinux6898d1c661d79f4707d8ba82991b2195822780ca < 4be7810ba70291abb2f68cc6db0ae1b93ee9c76aaffected
LinuxLinux6898d1c661d79f4707d8ba82991b2195822780ca < 7babc25d8dd5b7642920fbc0737cfd1469e7025baffected
LinuxLinux6898d1c661d79f4707d8ba82991b2195822780ca < 4664368b9bd9d5d79ebad24056b98c34b9fed20faffected
LinuxLinux6898d1c661d79f4707d8ba82991b2195822780ca < e37cdd75f8d61c1123d324ae5667ac3da562290eaffected
LinuxLinux5.6affected
LinuxLinux0 < 5.6unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References