CVE-2019-19590

In radare2 through 4.0, there is an integer overflow for the variable
new_token_size in the function r_asm_massemble at libr/asm/asm.c. This
integer overflow will result in a Use-After-Free for the buffer tokens,
which can be filled with arbitrary malicious data after the free. This
allows remote attackers to cause a denial of service (application crash) or
possibly execute arbitrary code via crafted input.

Bugs

• <https://bugs.launchpad.net/ubuntu/+source/radare2/+bug/1882889&gt;
• <https://bugs.launchpad.net/ubuntu/+source/radare2/+bug/1882889&gt;
• <https://bugs.launchpad.net/ubuntu/+source/radare2/+bug/1882889&gt;