CVE-2026-80680

In the Linux kernel, the following vulnerability has been resolved:

i2c: amd-mp2: Unregister callback on adapter add failure

amd mp2 register cb() stores the platform I2C context in the MP2 PCI driver's callback table before the adapter is registered. If i2c add adapter() fails, probe returns and devres frees the context, but the PCI driver can still dereference the stale pointer from its IRQ and system-sleep callbacks.

Unregister the callback before returning the adapter registration error.