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zerocopy send
About this tag
The zerocopy send tag on WindowsForum.com covers discussions about kernel-level networking vulnerabilities related to zero-copy data transmission, particularly the Linux RDS zerocopy cleanup bug CVE-2026-43502. This bug involves pinned user pages being released before a message reaches the socket queue, highlighting risks in high-performance I/O paths. While the vulnerability is Linux-specific, it is relevant to Windows administrators managing mixed environments or interested in kernel networking lifetime issues. The tag content emphasizes the dangers of cleanup bookkeeping in fast data movement and clarifies that the bug is not a Windows Remote Desktop Services issue despite the shared RDS acronym.
CVE-2026-43502 is a newly published Linux kernel vulnerability, added to NVD on May 21, 2026, involving Reliable Datagram Sockets zerocopy send cleanup when pinned user pages are released before a message reaches the socket queue. The bug is not a Windows Remote Desktop Services issue, despite...