UNDEFINED BEHAVIOR (EVIL C++)
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👀 Resources:
- Chris Lattner (2011) - What Every C Programmer Should Know About Undefined Behavior: https://blog.llvm.org/2011/05/what-every-c-programmer-should-know.html
- CVE-2009-1897 (Linux tun bug): https://nvd.nist.gov/vuln/detail/CVE-2009-1897
- Red Hat - Security flaws caused by compiler optimizations: https://www.redhat.com/en/blog/security-flaws-caused-compiler-optimizations
- MIT SOSP (2013) - Towards Optimization-Safe Systems: https://dspace.mit.edu/handle/1721.1/86980
- Raymond Chen (2014) - Undefined behavior can result in time travel: https://devblogs.microsoft.com/oldnewthing/20140627-00/?p=633
- OWASP - Heartbleed Bug: https://owasp.org/www-community/vulnerabilities/Heartbleed_Bug
- The Register - Heartbleed explained: https://www.theregister.com/2014/04/09/heartbleed_explained/
- Chromium Projects - Memory Safety: https://www.chromium.org/Home/chromium-security/memory-safety/
- Microsoft MSRC (2019) - A proactive approach to more secure code: https://msrc.microsoft.com/blog/2019/07/a-proactive-approach-to-more-secure-code
- Sandor Dargo (2025) - C++26: Erroneous Behaviour: https://www.accu.org/journals/overload/33/186/dargo
- Sandor Dargo (2026) - C++26: Reducing undefined behaviour: https://sandordargo.com/blog/2026/07/29/cpp26-reduces-undefined-behaviour
⏰Chapters:
00:00 - Introduction & the vanishing null check
00:49 - The C++ contract & behavior types
01:47 - Common examples of undefined behavior
02:13 - Why does UB exist? (Hardware & speed)
03:13 - How compilers optimize around UB
04:10 - The Linux kernel root exploit (CVE-2009-1897)
05:04 - Cursed optimization: calling uncalled code
05:45 - Real-world security disasters (Heartbleed & UAF)
07:08 - How to detect and prevent UB
08:05 - C++26 and erroneous behavior
08:19 - Summary & conclusion
⚡See More:
→ Learn Game Hacking: https://www.youtube.com/watch?v=3_VfW6bDBdE
→ Reverse Engineering: https://www.youtube.com/watch?v=0_Eif2qGK7I
→ Cheat Engine: https://www.youtube.com/watch?v=lky0-uuB-JE
→ Kernel Driver: https://www.youtube.com/watch?v=n463QJ4cjsU
🌌 Disclaimer:
- This video was created for educational purposes. Receive SMS online on sms24.me
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