CVE-2026-52929: PoC Exploit Published for Linux SCTP Privilege Escalation

A critical vulnerability in the Linux kernel, identified as CVE-2026-52929, has been reported, enabling potential privilege escalation via an SCTP stream handling flaw. The vulnerability has a CVSS score of 7.5 and affects various mainstream Linux distributions. Proof-of-concept exploit code has been published, demonstrating the elevation of privileges to root on Ubuntu 26.04. While the issue was introduced in 2017, it has been patched as of June 2026. Users are advised to update their kernels promptly to mitigate the risk.