CVE-2026-46109
Memory Leak in Linux Kernel USB ULPI Driver
Publication date: 2026-05-28
Last updated on: 2026-05-28
Assigner: kernel.org
Description
Description
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux_kernel | linux_kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Linux kernel to a version that includes the fix for the memory leak in the ulpi_register() error paths. The fix involves proper cleanup of memory allocations in the USB ULPI driver to prevent leaks and double frees.
Since this is a kernel-level issue, applying the latest kernel patches or upgrading to a fixed kernel version is the recommended immediate step.
Can you explain this vulnerability to me?
This vulnerability is a memory leak in the Linux kernel's USB ULPI driver. Specifically, when certain error conditions occur before the device registration step, allocated memory for ULPI is not properly freed, causing a memory leak.
Previously, a fix was made to prevent a double-free error by removing a kfree call in one error path, but this introduced a new issue where memory allocated for ULPI was leaked if errors happened earlier in the process.
The fix adds proper memory deallocation (kfree) on these earlier error paths to ensure no memory is leaked.
How can this vulnerability impact me? :
This vulnerability can lead to memory leaks in the Linux kernel when using the ULPI USB driver. Over time, repeated memory leaks can degrade system performance or stability, potentially causing resource exhaustion.
However, this issue does not directly lead to code execution or privilege escalation, but it may affect system reliability.