CVE-2026-80680

Description

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.

References

• https://git.kernel.org/stable/c/1883a09a37fed497b9efacf736c23624a472246b
• https://git.kernel.org/stable/c/2f7789b3a9628819ebf90bcba8f9da3c139f8687
• https://git.kernel.org/stable/c/4786d4d70dcd1e6b7e044f2348e00f201947b69c
• https://git.kernel.org/stable/c/82048795242f04275a3f49ffc66ad851b6120954
• https://git.kernel.org/stable/c/8bf719659406e4a1b56d441e0c7da2085d891d96