rtl_433 21.12 was discovered to contain a stack overflow in the function somfy_iohc_decode(). This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted file.
https://huntr.dev/bounties/6c9cd35f-a206-4fdf-b6d1-fcd50926c2d9/
https://github.com/merbanan/rtl_433/issues/1960
https://github.com/merbanan/rtl_433/commit/2dad7b9fc67a1d0bfbe520fbd821678b8f8cc7a8