{"cve":"CVE-2025-39911","nvd":{"published":"2025-10-01T08:15:34.140","modified":"2026-10-19T21:10:00.160","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/13ab9adef3cd386511c930a9660ae06595007f89","https://git.kernel.org/stable/c/23431998a37764c464737b855c71a81d50992e98","https://git.kernel.org/stable/c/6e4016c0dca53afc71e3b99e24252b63417395df","https://git.kernel.org/stable/c/915470e1b44e71d1dd07ee067276f003c3521ee3","https://git.kernel.org/stable/c/a30afd6617c30aaa338d1dbcb1e34e7a1890085c"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-39911","score":0.00161,"percentile":0.05238,"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."]}