CVE-2026-43221 Details
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.
A vulnerability exists in the Linux kernel's IPMI IPMB event handler, where the handler fails to properly initialize a value before an I2C read. This oversight can lead to the I2C read returning an uninitialized value from the bus driver. The issue arises because IPMB does not utilize I2C reads, yet the event handler is required to set a value to ensure proper functionality.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/102712417bb6aa9a00d852bc59cb0a276db486c4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/2dfbc8c17dd161885336e77e71c336cd62cf6748 | kernel.org | Patch |
| https://git.kernel.org/stable/c/56d5c0557e53c4d8d92a619fa83eaae178165e07 | kernel.org | Patch |
| https://git.kernel.org/stable/c/905554ebd76aeee370bfd5136ea11e0b9d75c6f1 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9f235ccecd03c436cb1683eac16b12f119e54aa9 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f726b3a57e00bb6249c67714c11ae8b4b31719a1 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-908 | Use of Uninitialized Resource | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.16, < 6.1.165 >= 6.2, < 6.6.128 >= 6.7, < 6.12.75 >= 6.13, < 6.18.16 >= 6.19, < 6.19.6 7.0 rc1 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 12, 2026 | Initial Analysis | [email protected] |
| May 6, 2026 | New CVE Received | kernel.org |