CVE-2025-39812

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> sctp: initialize more fields in sctp_v6_from_sk()<br /> <br /> syzbot found that sin6_scope_id was not properly initialized,<br /> leading to undefined behavior.<br /> <br /> Clear sin6_scope_id and sin6_flowinfo.<br /> <br /> BUG: KMSAN: uninit-value in __sctp_v6_cmp_addr+0x887/0x8c0 net/sctp/ipv6.c:649<br /> __sctp_v6_cmp_addr+0x887/0x8c0 net/sctp/ipv6.c:649<br /> sctp_inet6_cmp_addr+0x4f2/0x510 net/sctp/ipv6.c:983<br /> sctp_bind_addr_conflict+0x22a/0x3b0 net/sctp/bind_addr.c:390<br /> sctp_get_port_local+0x21eb/0x2440 net/sctp/socket.c:8452<br /> sctp_get_port net/sctp/socket.c:8523 [inline]<br /> sctp_listen_start net/sctp/socket.c:8567 [inline]<br /> sctp_inet_listen+0x710/0xfd0 net/sctp/socket.c:8636<br /> __sys_listen_socket net/socket.c:1912 [inline]<br /> __sys_listen net/socket.c:1927 [inline]<br /> __do_sys_listen net/socket.c:1932 [inline]<br /> __se_sys_listen net/socket.c:1930 [inline]<br /> __x64_sys_listen+0x343/0x4c0 net/socket.c:1930<br /> x64_sys_call+0x271d/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:51<br /> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]<br /> do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94<br /> entry_SYSCALL_64_after_hwframe+0x77/0x7f<br /> <br /> Local variable addr.i.i created at:<br /> sctp_get_port net/sctp/socket.c:8515 [inline]<br /> sctp_listen_start net/sctp/socket.c:8567 [inline]<br /> sctp_inet_listen+0x650/0xfd0 net/sctp/socket.c:8636<br /> __sys_listen_socket net/socket.c:1912 [inline]<br /> __sys_listen net/socket.c:1927 [inline]<br /> __do_sys_listen net/socket.c:1932 [inline]<br /> __se_sys_listen net/socket.c:1930 [inline]<br /> __x64_sys_listen+0x343/0x4c0 net/socket.c:1930