CVE-2026-80680
i2c: amd-mp2: Unregister callback on adapter add failure
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.
INFO
Published Date :
Aug. 28, 2026, 8:16 a.m.
Last Modified :
Aug. 28, 2026, 8:16 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-80680
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Unregister callback before returning adapter registration error.
- Ensure proper resource cleanup during probe failures.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-80680.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-80680 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-80680
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-80680 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-80680 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 28, 2026
Action Type Old Value New Value Added 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/80xxx/CVE-2026-80680.json">CVE-2026-80680</a> Added Reference https://git.kernel.org/stable/c/1883a09a37fed497b9efacf736c23624a472246b Added Reference https://git.kernel.org/stable/c/2f7789b3a9628819ebf90bcba8f9da3c139f8687 Added Reference https://git.kernel.org/stable/c/4786d4d70dcd1e6b7e044f2348e00f201947b69c Added Reference https://git.kernel.org/stable/c/82048795242f04275a3f49ffc66ad851b6120954 Added Reference https://git.kernel.org/stable/c/8bf719659406e4a1b56d441e0c7da2085d891d96 Added Reference https://git.kernel.org/stable/c/9142a3dcff0d80a3a24ce159aee19ddc869d9784 Added Reference https://git.kernel.org/stable/c/b7c2c5c8868737926410b93d1223ada17625ead3 Added Reference https://git.kernel.org/stable/c/cf107c5983dc70fcf932a305581a5f976d908ff1