CVE-2026-43221
ipmi: ipmb: initialise event handler read bytes
Description
In the Linux kernel, the following vulnerability has been resolved: ipmi: ipmb: initialise event handler read bytes IPMB doesn't use i2c reads, but the handler needs to set a value. Otherwise an i2c read will return an uninitialised value from the bus driver.
INFO
Published Date :
May 6, 2026, 12:16 p.m.
Last Modified :
May 6, 2026, 1:07 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel.
- Apply the patch for ipmi: ipmb initialization.
- Ensure event handler is initialized correctly.
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-2026-43221.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43221 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-2026-43221
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-2026-43221 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-43221 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
May. 06, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ipmi: ipmb: initialise event handler read bytes IPMB doesn't use i2c reads, but the handler needs to set a value. Otherwise an i2c read will return an uninitialised value from the bus driver. Added Reference https://git.kernel.org/stable/c/102712417bb6aa9a00d852bc59cb0a276db486c4 Added Reference https://git.kernel.org/stable/c/2dfbc8c17dd161885336e77e71c336cd62cf6748 Added Reference https://git.kernel.org/stable/c/56d5c0557e53c4d8d92a619fa83eaae178165e07 Added Reference https://git.kernel.org/stable/c/905554ebd76aeee370bfd5136ea11e0b9d75c6f1 Added Reference https://git.kernel.org/stable/c/9f235ccecd03c436cb1683eac16b12f119e54aa9 Added Reference https://git.kernel.org/stable/c/f726b3a57e00bb6249c67714c11ae8b4b31719a1