{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-21787",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-21787"
  ],
  "published": "2025-02-27T02:18:18Z",
  "summary": "team: better TEAM_OPTION_TYPE_STRING validation",
  "details": "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",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.129",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-21787"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7c30483d0f6bdb2230e10e3e4be5167927eac7a0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7f5af50f3aa0af8cbef9fb76fffeed69e8143f59"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f443687ad20c70320d1248f35f57bf46cac8df0a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4512482e4805dd30bc77dec511f2a2edba5cb868"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d071a91fa614ecdf760c29f61f6a7bfb7df796d6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4236bf4716589558cc0f3c3612642b2c2141b04e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8401cade1918281177974b32c925afdce750d292"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5bef3ac184b5626ea62385d6b82a1992b89d7940"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}