{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-39911",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-39911"
  ],
  "published": "2025-10-01T07:47:34Z",
  "summary": "i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path\n\nIf request_irq() in i40e_vsi_request_irq_msix() fails in an iteration\nlater than the first, the error path wants to free the IRQs requested\nso far. However, it uses the wrong dev_id argument for free_irq(), so\nit does not free the IRQs correctly and instead triggers the warning:\n\n Trying to free already-free IRQ 173\n WARNING: CPU: 25 PID: 1091 at kernel/irq/manage.c:1829 __free_irq+0x192/0x2c0\n Modules linked in: i40e(+) [...]\n CPU: 25 UID: 0 PID: 1091 Comm: NetworkManager Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy)\n Hardware name: [...]\n RIP: 0010:__free_irq+0x192/0x2c0\n [...]\n Call Trace:\n  <TASK>\n  free_irq+0x32/0x70\n  i40e_vsi_request_irq_msix.cold+0x63/0x8b [i40e]\n  i40e_vsi_request_irq+0x79/0x80 [i40e]\n  i40e_vsi_open+0x21f/0x2f0 [i40e]\n  i40e_open+0x63/0x130 [i40e]\n  __dev_open+0xfc/0x210\n  __dev_change_flags+0x1fc/0x240\n  netif_change_flags+0x27/0x70\n  do_setlink.isra.0+0x341/0xc70\n  rtnl_newlink+0x468/0x860\n  rtnetlink_rcv_msg+0x375/0x450\n  netlink_rcv_skb+0x5c/0x110\n  netlink_unicast+0x288/0x3c0\n  netlink_sendmsg+0x20d/0x430\n  ____sys_sendmsg+0x3a2/0x3d0\n  ___sys_sendmsg+0x99/0xe0\n  __sys_sendmsg+0x8a/0xf0\n  do_syscall_64+0x82/0x2c0\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n  [...]\n  </TASK>\n ---[ end trace 0000000000000000 ]---\n\nUse the same dev_id for free_irq() as for request_irq().\n\nI tested this with inserting code to fail intentionally.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-39911"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/13ab9adef3cd386511c930a9660ae06595007f89"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6e4016c0dca53afc71e3b99e24252b63417395df"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b9721a023df38cf44a88f2739b4cf51efd051f85"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b905b2acb3a0bbb08ad9be9984d8cdabdf827315"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/23431998a37764c464737b855c71a81d50992e98"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a30afd6617c30aaa338d1dbcb1e34e7a1890085c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c62580674ce5feb1be4f90b5873ff3ce50e0a1db"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/915470e1b44e71d1dd07ee067276f003c3521ee3"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
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}