CVE-2023-54009
Runtime PM Reference Leak in Linux cdns_i2c_master_xfer Function
Publication date: 2025-12-24
Last updated on: 2025-12-24
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| cadence | cdns_i2c_master | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a runtime power management (PM) reference leak in the Linux kernel's cdns_i2c_master_xfer() function. When the function is called, it acquires a runtime PM reference, which should be released upon function exit. However, there is an error path where the function exits without releasing this reference, causing a leak.
How can this vulnerability impact me? :
The impact of this vulnerability is a leak of runtime PM references, which could lead to improper power management behavior such as preventing devices from entering low-power states, potentially causing increased power consumption or resource exhaustion.
What immediate steps should I take to mitigate this vulnerability?
Apply the patch or update to a Linux kernel version where the cdns_i2c_master_xfer() function has been fixed to properly release the runtime PM reference on all error paths, preventing the runtime PM leak.