Linux Kernel Thunderbolt UAF via Hotplug Ref
CVE-2026-98896 Published on October 23, 2026
thunderbolt: Keep the domain reference while processing hotplug
In the Linux kernel, the following vulnerability has been resolved:
thunderbolt: Keep the domain reference while processing hotplug
We process hotplug events in a workqueue that may run after the domain
has been removed by tb_domain_remove(). For example if user unloads the
driver while at the same time plugging a device router we may have
scheduled tb_handle_hotplug() to run. Avoid possible UAF in this case by
taking the domain reference before scheduling the hotplug handler in
tb_queue_hotplug().
Products Associated with CVE-2026-98896
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Affected Versions
Linux:- Version d6cc51cd1a4aed1d9e2dd66d643d729acb4be560 and below 06b2e894e640f6a3dbeb536a2d26d72426b26a46 is affected.
- Version d6cc51cd1a4aed1d9e2dd66d643d729acb4be560 and below 1d991f749a8255ee2ecc6307e2f27354ab631827 is affected.
- Version d6cc51cd1a4aed1d9e2dd66d643d729acb4be560 and below e8656465d08ed832e120c9cca4a6d0c8ccb45698 is affected.
- Version d6cc51cd1a4aed1d9e2dd66d643d729acb4be560 and below b61a4ae2ec6a0d363615d01106e0a2d284133a38 is affected.
- Version d6cc51cd1a4aed1d9e2dd66d643d729acb4be560 and below 04df2985159e381c88a923fae1bec2f8d0272412 is affected.
- Version d6cc51cd1a4aed1d9e2dd66d643d729acb4be560 and below 0a87af3b1e3aa2e09d160848daf0c39e765b73de is affected.
- Version d6cc51cd1a4aed1d9e2dd66d643d729acb4be560 and below 138ec65b2c761f065b19d115aed2b8246fc272f5 is affected.
- Version 3.17 is affected.
- Before 3.17 is unaffected.
- Version 5.10.271, <= 5.10.* is unaffected.
- Version 5.15.222, <= 5.15.* is unaffected.
- Version 6.1.189, <= 6.1.* is unaffected.
- Version 6.6.158, <= 6.6.* is unaffected.
- Version 6.12.111, <= 6.12.* is unaffected.
- Version 6.18.53, <= 6.18.* is unaffected.
- Version 7.2, <= * is unaffected.