CVE-2024-56691: mfd: intel_soc_pmic_bxtwc: Use IRQ domain for USB Type-C device
In the Linux kernel, the following vulnerability has been resolved:
mfd: intelsocpmicbxtwc: Use IRQ domain for USB Type-C device
While design wise the idea of converting the driver to use the hierarchy of the IRQ chips is correct, the implementation has (inherited) flaws. This was unveiled when platformgetirq() had started WARN() on IRQ 0 that is supposed to be a Linux IRQ number (also known as vIRQ).
Rework the driver to respect IRQ domain when creating each MFD device separately, as the domain is not the same for all of them.
Other sources
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— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-56691?
CVE-2024-56691 has been classified with a moderate severity level due to its potential impact on user systems.
How do I fix CVE-2024-56691?
To fix CVE-2024-56691, you should update to the latest version of the Linux kernel where the vulnerability has been resolved.
Which systems are affected by CVE-2024-56691?
CVE-2024-56691 affects systems running certain versions of the Linux kernel that utilize the intel_soc_pmic_bxtwc driver.
What is the nature of CVE-2024-56691 vulnerability?
CVE-2024-56691 involves flaws in the implementation of IRQ domains for USB Type-C devices in the Linux kernel.
Is CVE-2024-56691 actively exploited?
As of the latest information, CVE-2024-56691 has not been reported as actively exploited in the wild.