Linux Kernel xprtrdma Vulnerability in Memory Management

CVE-2026-43469

What is CVE-2026-43469?

The Linux kernel's xprtrdma module has a vulnerability related to premature exits during memory allocation failures. When rpcrdma_post_recvs() does not successfully create a work request, it can lead to the re_receiving counter not being decremented appropriately. This issue causes worker threads to hang, potentially leading to severe system performance degradation, especially under high memory pressure. As a result, application responsiveness may be severely affected as tasks remain blocked indefinitely.

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