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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-39812

sctp: initialize more fields in sctp_v6_from_sk()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 45e4b36593edffb7bbee5828ae820bc10a9fa0f3affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9546934c2054bba1bd605c44e936619159a34027affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 17d6c7747045e9b802c2f5dfaba260d309d831aeaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 65b4693d8bab5370cfcb44a275b4d8dcb06e56bfaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 463aa96fca6209bb205f49f7deea3817d7ddaa3aaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 1bbc0c02aea1f1c405bd1271466889c25a1fe01baffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < f6c2cc99fc2387ba6499facd6108f6543382792daffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2e8750469242cad8f01f320131fd5a6f540dbb99affected

Linux Linux

Default version status: affected

  • 2.6.12affected
  • 0 to < 2.6.12unaffected
  • 5.4.298 to ≤ 5.4.*unaffected
  • 5.10.242 to ≤ 5.10.*unaffected
  • 5.15.191 to ≤ 5.15.*unaffected
  • 6.1.150 to ≤ 6.1.*unaffected
  • 6.6.104 to ≤ 6.6.*unaffected
  • 6.12.45 to ≤ 6.12.*unaffected
  • 6.16.5 to ≤ 6.16.*unaffected
  • 6.17 to ≤ *unaffected

References