Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C library version 2.34 to version 2.43 could result in an invalid DNS hostname being returned to the caller in violation of the DNS specification.
Exploitability
AV:AAC:LPR:NUI:NScope
S:UImpact
C:LI:LA:N5.4/CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NInput Validation