RDMA Memory Management Flaw Affecting Linux Kernel

CVE-2026-93277

What is CVE-2026-93277?

A vulnerability has been identified within the Linux kernel regarding RDMA driver resource management. The issue arises from improper validation of user data (udata) before executing commands. The current implementation allows for potential misuse where an incomplete userspace access could cause the destroy callbacks to execute on already freed resources. To mitigate this issue, it is crucial to validate user data prior to the teardown phase. This ensures that any errors are caught while the resources are still intact, preventing hardware object leaks and maintaining system stability. Affected users should explore the necessary updates to protect against such vulnerabilities.

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