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.
Exploitability
AV:LAC:LPR:HUI:NScope
S:UImpact
C:HI:NA:L5.1/CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:LMemory Safety