Ksmbd – Exploiting CVE-2025-37947
14 hours ago
- #CVE-2025-37947
- #ksmbd
- #Linux Kernel Exploitation
- Final post in the ksmbd series focusing on CVE-2025-37947 exploitation.
- Discusses selection of bugs for exploitation, favoring deterministic paths over race conditions.
- Details root cause analysis of CVE-2025-37947, involving an out-of-bounds write in ksmbd_vfs_stream_write.
- Explains the exploitation strategy, including heap shaping and memory corruption to achieve privilege escalation.
- Describes the proof of concept (PoC) demonstrating the vulnerability's reachability.
- Covers the exploitation flow from memory corruption to kernel code execution, including KASLR bypass.
- Highlights the exploit's success in achieving local root escalation on Ubuntu 22.04 LTS.
- Mentions challenges in remote exploitation due to the need for additional primitives like information leaks.
- Provides references to related work and techniques used in the exploit development.