{"uuid": "b63ca0a1-4627-492c-91f5-ce4ba8cb0a6c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2023-21400", "type": "published-proof-of-concept", "source": "https://t.me/linkersec/216", "content": "Dirty Pagetable: A Novel Exploitation Technique To Rule Linux Kernel\n\nAn article by Nicolas Wu about the Dirty Pagetable exploitation technique.\n\nDirty Pagetable enables using a slab bug to overwrite userspace Page Table Entries and gain arbitrary read/write access to physical memory.\n\nTo demonstrate the technique, Nicolas Wu and Ye Zhang wrote a few exploits, including one for CVE-2023-21400, a racy slab double-free in the io_uring subsystem. The exploit gains root on Pixel 7.", "creation_timestamp": "2023-07-12T23:20:58.000000Z"}