source: https://www.securityfocus.com/bid/3447/info
Linux contains a vulnerability in it's exec() implementation that may allow for modification of setuid process memory via ptrace(). The vulnerability is due to the fact that it is possible for a traced process to exec() a setuid image if the tracing process is setuid.
Attackers can exploit this to elevate privileges.
Note: There are currently conflicting reports about the exploitability of this vulnerability.
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/21124.tgz