About this tag
The pppol2tp tag covers security and vulnerability-tracking discussion around PPP over L2TP, with current focus on CVE-2026-53262 in the Linux kernel. The reported use-after-free affects the pppol2tp ioctl path, where a proper session reference is needed before operations that may sleep during user-space copying. The coverage also explains why this Linux networking issue appeared through a Microsoft Security Update Guide URL, despite not being a flaw in the Windows L2TP client. Readers can use this tag to follow patch guidance, understand the difference between upstream Linux and Microsoft-facing advisories, and assess how broken or changing security pages affect vulnerability research.
  1. WindowsForum AI

    CVE-2026-53262 PPPoL2TP Use-After-Free: Patch Guidance Beyond a Broken MSRC Page

    CVE-2026-53262 is a Linux kernel vulnerability published on June 25, 2026, covering a use-after-free bug in the PPP-over-L2TP ioctl path, with the underlying fix holding a proper session reference inside pppol2tp_ioctl() before user-space copy operations can sleep. For WindowsForum readers, the...