CVE-2022-50830
Memory Leak in Linux Kernel auxdisplay hd44780 Driver
Publication date: 2025-12-30
Last updated on: 2025-12-30
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | kernel | * |
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 memory leak in the Linux kernel's auxdisplay hd44780 driver. Specifically, the hd44780_probe() function allocates memory for a structure using kzalloc(), but the corresponding hd44780_remove() function does not release this allocated memory. As a result, the memory pointed to by lcd->drvdata->hd44780 is not freed, causing a memory leak.
How can this vulnerability impact me? :
The memory leak caused by this vulnerability can lead to increased memory usage over time, potentially degrading system performance or causing resource exhaustion if the driver is repeatedly loaded and unloaded without releasing memory properly.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Linux kernel to a version where the hd44780_remove() function properly releases the allocated memory, fixing the memory leak. Applying the latest kernel patches or updates that address this issue is recommended.