USB: ulpi Memory Leak on Registration Failure

Executive Summary

This vulnerability is a memory leak in the Linux kernel related to USB ULPI device registration. When a ULPI device registration fails early in the process, the allocated device name is not freed, causing a memory leak. The fix involves initializing the device structure earlier and releasing the initial reference if registration fails.

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Detection Guidance

This vulnerability is specific to the Linux kernel's USB ULPI device handling. Detection requires checking kernel logs for ULPI device registration failures or memory leaks. Use commands like dmesg | grep -i ulpi or journalctl -k | grep -i ulpi to inspect kernel logs for related errors.

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Impact Analysis

This vulnerability may lead to gradual memory exhaustion on systems using USB ULPI devices. Over time, repeated registration failures could deplete available memory, potentially causing system instability, crashes, or degraded performance.

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Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. It involves a memory leak in the Linux kernel's USB ULPI device registration, which is a low-level system issue without clear implications for data protection or privacy regulations.

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Mitigation Strategies

Apply the latest Linux kernel update that includes the fix for this vulnerability. Monitor kernel logs for ULPI device registration issues. If you cannot update immediately, consider disabling affected USB devices or restricting their use until patched.

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