FFmpeg 7.0+ Bug: When Function Pointers Play Musical Chairs 🎶
FFmpeg 7.0+ faces type confusion as function pointers get lost in translation, leading to undefined behavior. With the right input, you might just teach FFmpeg new tricks like crashing or exposing data—who knew multimedia could be this exciting?
Hot Take:
***Looks like FFmpeg has decided to audition for a new role: “The Muddle-Maker.” With type confusion running amok, it’s like an episode of a sitcom where everyone swaps roles and chaos ensues. Someone call the script supervisor because this plot twist could lead to some unexpected, and potentially dangerous, ad-libbing!***
Key Points:
– FFmpeg’s latest versions (7.0 – 8.0) have a type confusion bug in function pointer calls.
– This bug can lead to undefined behavior, including misaligned function dispatch.
– The issue can result in a denial of service (DoS) or, on certain platforms, remote code execution (RCE).
– Crafted inputs are the villains here, causing the code to trip over its own feet.
– The gory details are buried in utils.c:528, where the UndefinedBehaviorSanitizer is frantically waving red flags.