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CVE-2026-64589
i2c: core: fix NULL-deref on adapter registration failure
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: i2c: core: fix NULL-deref on adapter registration failure If adapter registration ever fails the release callback would trigger a NULL-pointer dereference as the completion struct has not been initialised. Note that before the offending commit this would instead have resulted in a minor memory leak of the adapter name.

Details
INFO

Published Date :

Aug. 6, 2026, 8:16 a.m.

Last Modified :

Aug. 6, 2026, 8:16 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-64589 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

: Total Affected Vendor : 0 | Products : 0
Solution
Fix a NULL-pointer dereference by ensuring proper initialization before callback.
  • Update the Linux kernel to the resolved version.
  • Apply the patch addressing adapter registration failure.
  • Ensure completion struct is initialized before use.
References
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-2026-64589.

URL Resource
https://git.kernel.org/stable/c/034e307428119b67f5f18a35e4f4e7d15a2b9774
https://git.kernel.org/stable/c/2295d2bb101faa663fbc45fadbb3fec45f107441
https://git.kernel.org/stable/c/2ce0a74bfa3acdfcdb00cf02f181f2754b451f42
https://git.kernel.org/stable/c/3351c5e77749a0c8a1e252b95420c143ebcf07ac
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-64589 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-2026-64589 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-2026-64589 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-64589 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.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 06, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e19f31169f85c712c9fca35bfd28ceb093a9f574', 'lessThan': '2ce0a74bfa3acdfcdb00cf02f181f2754b451f42', 'versionType': 'git'}, {'status': 'affected', 'version': '3f8c4f5e9a57868fa107016c81165686d23325f2', 'lessThan': '3351c5e77749a0c8a1e252b95420c143ebcf07ac', 'versionType': 'git'}, {'status': 'affected', 'version': '3f8c4f5e9a57868fa107016c81165686d23325f2', 'lessThan': '034e307428119b67f5f18a35e4f4e7d15a2b9774', 'versionType': 'git'}, {'status': 'affected', 'version': '3f8c4f5e9a57868fa107016c81165686d23325f2', 'lessThan': '2295d2bb101faa663fbc45fadbb3fec45f107441', 'versionType': 'git'}, {'status': 'affected', 'version': '6.12.11', 'lessThan': '6.12.96', 'versionType': 'semver'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.13', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: i2c: core: fix NULL-deref on adapter registration failure If adapter registration ever fails the release callback would trigger a NULL-pointer dereference as the completion struct has not been initialised. Note that before the offending commit this would instead have resulted in a minor memory leak of the adapter name.
    Added Reference https://git.kernel.org/stable/c/034e307428119b67f5f18a35e4f4e7d15a2b9774
    Added Reference https://git.kernel.org/stable/c/2295d2bb101faa663fbc45fadbb3fec45f107441
    Added Reference https://git.kernel.org/stable/c/2ce0a74bfa3acdfcdb00cf02f181f2754b451f42
    Added Reference https://git.kernel.org/stable/c/3351c5e77749a0c8a1e252b95420c143ebcf07ac
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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