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StackRot (CVE-2023-3269) is a use-after-free vulnerability in the Linux kernel memory-management subsystem. Incorrect lock handling while accessing and updating virtual memory areas (VMAs) can leave freed memory reachable, enabling exploitation in kernel context.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a full proof-of-concept (PoC) local privilege escalation exploit for the Linux kernel vulnerability CVE-2023-3269 (StackRot), which affects kernel versions 6.1 through 6.4. The exploit targets a use-after-free (UAF) condition in the maple tree VMA management subsystem, allowing an unprivileged local user to escalate privileges to root and escape containers. The repository is well-structured, with the main exploit logic implemented in C under the `exp/src/` directory. The exploit is built as a static binary using a custom minimal C library (`nolibc`) for portability and minimal dependencies. The exploit orchestrates multiple processes and kernel objects (such as message queues and memory mappings) to trigger the UAF, leak kernel addresses, and construct a ROP chain for privilege escalation. The exploit is designed to be run in a QEMU virtual machine with a specific kernel image and configuration, as provided in the `env/` directory. Shell scripts (`exploit.sh`, `as_root.sh`) demonstrate post-exploitation actions, such as reading the root flag. The Makefile automates building and running the exploit in the test environment. Key fingerprintable endpoints include `/proc/self/maps` (used for kernel memory manipulation), `/tmp` (used for deep directory/file creation), and the root flag file (`/root/flag`). The attack vector is strictly local, requiring the attacker to execute code on the target system. The exploit is a PoC and not weaponized, but demonstrates a reliable method for exploiting this class of kernel vulnerabilities.
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2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
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