CVE-2026-58629: A Double-Free in dxgkrnl’s CreateAllocation Rollback

Original text: “July 2026 Patch Tuesday [CVE-2026-58629] Freeing the Wrong Allocation: a double-free in dxgkrnl’s CreateAllocation rollback” — gengstah, gengstah (personal blog), July 14, 2026. Disassembly, crash dumps and code below are reproduced verbatim with attribution captions.

Executive Summary

CVE-2026-58629 is a local elevation-of-privilege bug in dxgkrnl, the Windows Display Driver Model (WDDM) kernel component…

https://core-jmp.org/2026/07/cve-2026-58629-dxgkrnl-createallocation-double-free/