CVE-2026-80952 Linux Kernel i3c Master - Use After Free & Information Disclosure

Linux kernel i3c master contains an information leak and use-after-free caused by clearing device descriptor before device_unregister(), letting attackers leak kernel stack contents and cause use-after-free during device unregistration, exploit requires race condition during device unbind.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.13% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Information Disclosure, Use After Free
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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