{"uuid": "3cf91d3d-93d7-43d0-8b85-366ea40e17aa", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2025-4893", "type": "seen", "source": "https://t.me/pphm_HackerNews/458", "content": "Hidden Risk in the Code Undermining System Trust\n\nCVE-2025-4893 identifies a use-after-free (UAF) vulnerability within the Linux kernel's OverlayFS module. The flaw arises when the dput() function is invoked prematurely in the ovl_link_up process, leading to potential access of freed memory in subsequent operations like ovl_dentry_update_reval. This mismanagement can result in system instability or exploitation by malicious actors.\n\n\ud83d\udd17 Read More", "creation_timestamp": "2026-07-22T05:00:05.961568Z"}