The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).
https://github.com/TokTok/c-toxcore/pull/1216
https://blog.tox.chat/2018/10/memory-leak-bug-and-new-toxcore-release-fixing-it/
https://github.com/TokTok/c-toxcore/issues/1214
Source: Mitre, NVD
Published: 2021-12-13
Updated: 2022-02-08
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High
EPSS: 0.00976