CVE-2021-31321

Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1
are affected by a Stack Based Overflow in the gray_split_cubic function of
their custom fork of the rlottie library. A remote attacker might be able
to overwrite Telegram’s stack memory out-of-bounds on a victim device via a
malicious animated sticker.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988885&gt;