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Acknowledged

LIN1021-14410 : Security Advisory - linux - CVE-2025-21787

Created: Feb 27, 2025    Updated: Jun 17, 2025
Found In Version: 10.21.20.1
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Kernel

Description

In the Linux kernel, the following vulnerability has been resolved:team: better TEAM_OPTION_TYPE_STRING validationsyzbot reported following splat 1]Make sure user-provided data contains one nul byte.[1] BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:633 [inline] BUG: KMSAN: uninit-value in string+0x3ec/0x5f0 lib/vsprintf.c:714  string_nocheck lib/vsprintf.c:633 [inline]  string+0x3ec/0x5f0 lib/vsprintf.c:714  vsnprintf+0xa5d/0x1960 lib/vsprintf.c:2843  __request_module+0x252/0x9f0 kernel/module/kmod.c:149  team_mode_get drivers/net/team/team_core.c:480 [inline]  team_change_mode drivers/net/team/team_core.c:607 [inline]  team_mode_option_set+0x437/0x970 drivers/net/team/team_core.c:1401  team_option_set drivers/net/team/team_core.c:375 [inline]  team_nl_options_set_doit+0x1339/0x1f90 drivers/net/team/team_core.c:2662  genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]  genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]  genl_rcv_msg+0x1214/0x12c0 net/netlink/genetlink.c:1210  netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2543  genl_rcv+0x40/0x60 net/netlink/genetlink.c:1219  netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]  netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1348  netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1892  sock_sendmsg_nosec net/socket.c:718 [inline]  __sock_sendmsg+0x30f/0x380 net/socket.c:733  ____sys_sendmsg+0x877/0xb60 net/socket.c:2573  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2627  __sys_sendmsg net/socket.c:2659 [inline]  __do_sys_sendmsg net/socket.c:2664 [inline]  __se_sys_sendmsg net/socket.c:2662 [inline]  __x64_sys_sendmsg+0x212/0x3c0 net/socket.c:2662  x64_sys_call+0x2ed6/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:47  do_syscall_x64 arch/x86/entry/common.c:52 [inline]  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CREATE(Triage):(User=admin) [CVE-2025-21787 (https://nvd.nist.gov/vuln/detail/CVE-2025-21787)
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