A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnl_osf_add_callback function did not validate the user mode controlled opt_num field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure. CREATE(Triage):(User=admin) CVE-2023-39189 (https://nvd.nist.gov/vuln/detail/CVE-2023-39189)
