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CVE-2022-1043 is a use-after-free vulnerability in the Linux kernel's io_uring subsystem. The flaw allows a local attacker to exploit same-type, same-address object reuse, enabling them to corrupt system memory, crash the system, or escalate privileges. The vulnerability arises when a released object (such as a file or credential structure) is reallocated at the same address and type, bypassing existing mitigations like AUTOSLAB and KASAN. This enables attackers to hijack sensitive kernel resources, such as file objects or process credentials, leading to potential privilege escalation.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module for exploiting CVE-2022-1043, a local privilege escalation vulnerability in the Linux kernel's io_uring subsystem. The exploit targets kernels from version 5.12-rc3 to 5.14-rc7 and has been tested on Ubuntu 22.04.01 with kernel 5.13.12-051312-generic. The module works by uploading and executing an exploit binary and a payload (such as a meterpreter shell) in a writable directory (default: /tmp). It hijacks process credentials to escalate privileges to root, then executes the payload as root. The exploit requires at least two CPU cores and will cause a kernel panic after successful exploitation due to the nature of the vulnerability. The module is operational and provides a root shell or meterpreter session if successful. The only fingerprintable endpoint is the writable directory used for file drops. The code is structured as a standard Metasploit local exploit module, with options for payload selection and directory configuration.
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