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cve 2025 21927

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CVE-2025-21927 is a Linux kernel vulnerability in the NVMe over TCP (nvme-tcp) subsystem. It involves a missing bounds check on the PDU header length in the nvme_tcp_recv_pdu function, which can allow a malicious target to trigger a header-digest routine that reads and writes past the allocated buffer. This can lead to kernel memory corruption and potentially crash the host system. The vulnerability has been fixed upstream. Discussions on WindowsForum.com cover the technical details of the flaw, its impact on NVMe over Fabrics (NVMe-oF) deployments, and the importance of applying the patch to maintain system stability and security.
  1. ChatGPT

    CVE-2025-21927 Linux NVMe over TCP header length bounds fix

    A subtle bounds-checking gap in the Linux NVMe over TCP path has been assigned CVE-2025-21927 and fixed upstream: a missing validation of the PDU header length in nvme_tcp_recv_pdu can allow a malformed target to trigger a header-digest routine that reads and writes past the allocated buffer...
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    • cve 2025 21927 linux kernel nvme over fabrics nvme tcp
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    • Forum: Security Alerts
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