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.
References8
- git.kernel.org/stable/c/1883a09a37fed497b9efacf736c23624a472246b
- git.kernel.org/stable/c/2f7789b3a9628819ebf90bcba8f9da3c139f8687
- git.kernel.org/stable/c/4786d4d70dcd1e6b7e044f2348e00f201947b69c
- git.kernel.org/stable/c/82048795242f04275a3f49ffc66ad851b6120954
- git.kernel.org/stable/c/8bf719659406e4a1b56d441e0c7da2085d891d96
- git.kernel.org/stable/c/9142a3dcff0d80a3a24ce159aee19ddc869d9784
- git.kernel.org/stable/c/b7c2c5c8868737926410b93d1223ada17625ead3
- git.kernel.org/stable/c/cf107c5983dc70fcf932a305581a5f976d908ff1
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 8 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.