Strix
74.6K

CVE-2026-93200

UnknownEPSS 0.16%

Last modified

CVE-2026-93200 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
0.16%

4.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < a9b9cae0bd887ef0d438887f20b0a417491e45f0; >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < 94af669037d129914828a851d8b2a79b4537b73f; >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < e766605a0490723df7b61e6abd0c392889732dd7; >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < 027679d613ea73b8a00831369ec34eea804ce1bd; >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < 23a1c4288a60e253a05a882bd8928ed61beb4a48; >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < 4f3145db05fede36b35f8249b8acde5bd5d54864; >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < 50034d8d0f797c3a7a599f750a7d3e792e80dea5; >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < feb0ed76601f3c2f91f08688c5a7d8b9d382f720
LinuxLinux5.0

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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.
How severe is CVE-2026-93200?
Severity scoring for CVE-2026-93200 is pending analysis. The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2026-93200?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-93200?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST