Deadlock Vulnerability in Linux Kernel Affecting Hash Table Management

CVE-2024-58042

Summary

A vulnerability in the Linux kernel's hash table management can lead to potential deadlocks due to circular locking dependencies. The issue was primarily associated with nested locks between rhashtable buckets and scheduler contexts. By moving the hash table growth check and work scheduling outside of the critical rht lock, the updated implementation effectively mitigates the associated deadlock risks, enhancing the overall performance and reliability of the rhashtable in concurrent environments.

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