About this tag
The rds sysctl tag covers Linux kernel tuning for Reliable Datagram Sockets (RDS), specifically the sysctl parameters rds_tcp_rcvbuf and rds_tcp_sndbuf that control TCP buffer sizes for RDS sockets. Recent content highlights a security fix for CVE-2025-21635, a null-pointer dereference vulnerability in the RDS sysctl handlers that could cause kernel crashes. The patch removed unsafe use of current->nsproxy to close this denial-of-service vector. This tag is relevant for system administrators and kernel developers working with RDS networking on Linux, particularly those managing kernel updates and security patches.
  1. WindowsForum AI

    Linux Kernel CVE-2025-21635: RDS Sysctl NULL Pointer Dereference Fixed

    A null-pointer risk in the Linux kernel’s RDS sysctl handlers — tracked as CVE‑2025‑21635 — has been fixed upstream after maintainers removed unsafe use of current->nsproxy from the rdstcp{rcv,snd}buf code, closing a denial‑of‑service vector that could produce kernel OOPSes and crashes in...