CVE-2026-39457 Stack overflow via select() file descriptor set overflow

When exchanging data over a socket, libnv uses select2 to wait for data to arrive. However, it does not verify whether the provided socket descriptor fits in select2's file descriptor set size limit of FDSETSIZE 1024. An attacker who is able to force a libnv application to allocate large file...

FreeBSD Security Advisory - FreeBSD-SA-26:16.libnv

FreeBSD Security Advisory - When exchanging data over a socket, libnv uses select2 to wait for data to arrive. However, it does not verify whether the provided socket descriptor fits in select2's file descriptor set size limit of FDSETSIZE 1024...