Crush+bug+telegram+upd ((full)) Review

A new wave of app stability issues, commonly referred to as the "Crush Bug," has recently affected Telegram users, primarily causing the application to crash or behave erratically upon receiving specific message types or interacting with certain UI elements.

Logs or Screenshots:

I have attached [mention if you're including any logs, screenshots, or crash reports] for your reference. crush+bug+telegram+upd

Once the new upd arrives, the Crush Bug will be a footnote in Telegram’s changelog. Until then, spread this article—because right now, millions of users are seeing the white screen of death and thinking they’ve been hacked. A new wave of app stability issues, commonly

4.2 Reproduction Steps

  1. Capture a crash with logcat immediately after triggering input.
  2. Save offending message payload (JSON/MTProto packet) or media bytes.
  3. Use adb bugreport to collect system state and tombstones.
  4. If crash in native code, extract tombstone and map addresses with symbols.
  5. Reduce payload to minimal reproducer: bisect content until smallest payload still triggers crash.

1. Native Heap Hardening

The update rewrites the rmalloc function used in the tg_ui_cpp layer. Previously, fragmented memory blocks led to a buffer overflow. The new update introduces a garbage collector specifically for the chat list cache, preventing the "Crush" when loading groups with 50,000+ members. Capture a crash with logcat immediately after triggering

Here is a detailed story following a fictionalized engineering team at Telegram as they race to fix a "crash loop" affecting millions of users. 🕒 10:00 AM: The Update Deployment