{"cve":"CVE-2025-21787","nvd":{"published":"2025-02-27T03:15:19.553","modified":"2026-10-15T02:17:35.443","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nteam: better TEAM_OPTION_TYPE_STRING validation\n\nsyzbot reported following splat [1]\n\nMake sure user-provided data contains one nul byte.\n\n[1]\n BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:633 [inline]\n BUG: KMSAN: uninit-value in string+0x3ec/0x5f0 lib/vsprintf.c:714\n  string_nocheck lib/vsprintf.c:633 [inline]\n  string+0x3ec/0x5f0 lib/vsprintf.c:714\n  vsnprintf+0xa5d/0x1960 lib/vsprintf.c:2843\n  __request_module+0x252/0x9f0 kernel/module/kmod.c:149\n  team_mode_get drivers/net/team/team_core.c:480 [inline]\n  team_change_mode drivers/net/team/team_core.c:607 [inline]\n  team_mode_option_set+0x437/0x970 drivers/net/team/team_core.c:1401\n  team_option_set drivers/net/team/team_core.c:375 [inline]\n  team_nl_options_set_doit+0x1339/0x1f90 drivers/net/team/team_core.c:2662\n  genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]\n  genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]\n  genl_rcv_msg+0x1214/0x12c0 net/netlink/genetlink.c:1210\n  netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2543\n  genl_rcv+0x40/0x60 net/netlink/genetlink.c:1219\n  netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]\n  netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1348\n  netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1892\n  sock_sendmsg_nosec net/socket.c:718 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:733\n  ____sys_sendmsg+0x877/0xb60 net/socket.c:2573\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2627\n  __sys_sendmsg net/socket.c:2659 [inline]\n  __do_sys_sendmsg net/socket.c:2664 [inline]\n  __se_sys_sendmsg net/socket.c:2662 [inline]\n  __x64_sys_sendmsg+0x212/0x3c0 net/socket.c:2662\n  x64_sys_call+0x2ed6/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:47\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-908"],"references":["https://git.kernel.org/stable/c/4236bf4716589558cc0f3c3612642b2c2141b04e","https://git.kernel.org/stable/c/4512482e4805dd30bc77dec511f2a2edba5cb868","https://git.kernel.org/stable/c/5bef3ac184b5626ea62385d6b82a1992b89d7940","https://git.kernel.org/stable/c/7c30483d0f6bdb2230e10e3e4be5167927eac7a0","https://git.kernel.org/stable/c/7f5af50f3aa0af8cbef9fb76fffeed69e8143f59"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2025-21787","score":0.00272,"percentile":0.19395,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}