CVE-2026-93200
In the Linux kernel, the following vulnerability has been resolved: i3c: master: Fix use-after-free of master->this sysfs attribute callbacks for the master controller device dereference master->this. However, master->this is freed in i3c_master_detach_free_devs() before the master device itself is released. As a result, sysfs accesses can dereference a freed master->this pointer, leading to a use-after-free. Keep master->this alive until i3c_masterdev_release(), which is called after the master device and its sysfs state are being torn down. Do not free master->this as part of the normal device detach path. On the error path in i3c_master_set_info(), reset master->this and bus.cur_master to NULL before freeing the allocated device.
Affected versions
Linux kernel versions
5.0
and later are affected. Fixed in
6.12.112,
6.18.52,
7.2.6,
7.3-rc1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-93200?
CVE-2026-93200 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.0 onward and has been patched in 6.12.112, 6.18.52, 7.2.6 and others. CVE-2026-93200 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-93200?
Yes. CVE-2026-93200 has been patched. Fixed versions include 6.12.112, 6.18.52, 7.2.6 and others. If you are running Linux kernel 5.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-93200 actively exploited?
No. CVE-2026-93200 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.