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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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
https://git.kernel.org/stable/c/9142a3dcff0d80a3a24ce159aee19ddc869d9784
https://git.kernel.org/stable/c/b7c2c5c8868737926410b93d1223ada17625ead3
https://git.kernel.org/stable/c/cf107c5983dc70fcf932a305581a5f976d908ff1

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 08:16

Updated : 2026-08-29 07:16

NVD link : CVE-2026-80680

Mitre link : CVE-2026-80680

CVE.ORG link : CVE-2026-80680

JSON object : View

Products Affected

No product.

CWE

No CWE.

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If\ni2c_add_adapter() fails, probe returns and devres frees the context,\nbut the PCI driver can still dereference the stale pointer from its IRQ\nand system-sleep callbacks.\n\nUnregister the callback before returning the adapter registration error."}], "lastModified": "2026-08-29T07:16:50.370", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}