CVE-2025-39911

i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path

State: Published
Severity: Not scored
Published: Oct 1, 2025
Updated: Jun 11, 2026
Reserved: Apr 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path

If request_irq() in i40e_vsi_request_irq_msix() fails in an iteration later than the first, the error path wants to free the IRQs requested so far. However, it uses the wrong dev_id argument for free_irq(), so it does not free the IRQs correctly and instead triggers the warning:

Trying to free already-free IRQ 173 WARNING: CPU: 25 PID: 1091 at kernel/irq/manage.c:1829 __free_irq+0x192/0x2c0 Modules linked in: i40e(+) [...] CPU: 25 UID: 0 PID: 1091 Comm: NetworkManager Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy) Hardware name: [...] RIP: 0010:__free_irq+0x192/0x2c0 [...] Call Trace: <TASK> free_irq+0x32/0x70 i40e_vsi_request_irq_msix.cold+0x63/0x8b [i40e] i40e_vsi_request_irq+0x79/0x80 [i40e] i40e_vsi_open+0x21f/0x2f0 [i40e] i40e_open+0x63/0x130 [i40e] __dev_open+0xfc/0x210 __dev_change_flags+0x1fc/0x240 netif_change_flags+0x27/0x70 do_setlink.isra.0+0x341/0xc70 rtnl_newlink+0x468/0x860 rtnetlink_rcv_msg+0x375/0x450 netlink_rcv_skb+0x5c/0x110 netlink_unicast+0x288/0x3c0 netlink_sendmsg+0x20d/0x430 ____sys_sendmsg+0x3a2/0x3d0 ___sys_sendmsg+0x99/0xe0 __sys_sendmsg+0x8a/0xf0 do_syscall_64+0x82/0x2c0 entry_SYSCALL_64_after_hwframe+0x76/0x7e [...] </TASK> ---[ end trace 0000000000000000 ]---

Use the same dev_id for free_irq() as for request_irq().

I tested this with inserting code to fail intentionally.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	493fb30011b3ab5173cef96f1d1ce126da051792 to before 13ab9adef3cd386511c930a9660ae06595007f89Affected 493fb30011b3ab5173cef96f1d1ce126da051792 to before 6e4016c0dca53afc71e3b99e24252b63417395dfAffected 493fb30011b3ab5173cef96f1d1ce126da051792 to before b9721a023df38cf44a88f2739b4cf51efd051f85Affected 493fb30011b3ab5173cef96f1d1ce126da051792 to before b905b2acb3a0bbb08ad9be9984d8cdabdf827315Affected 493fb30011b3ab5173cef96f1d1ce126da051792 to before 23431998a37764c464737b855c71a81d50992e98Affected 493fb30011b3ab5173cef96f1d1ce126da051792 to before a30afd6617c30aaa338d1dbcb1e34e7a1890085cAffected 493fb30011b3ab5173cef96f1d1ce126da051792 to before c62580674ce5feb1be4f90b5873ff3ce50e0a1dbAffected 493fb30011b3ab5173cef96f1d1ce126da051792 to before 915470e1b44e71d1dd07ee067276f003c3521ee3Affected
LinuxLinux	3.13Affected before 3.13Not affected 5.4.300 through 5.4.Not affected 5.10.245 through 5.10.Not affected 5.15.194 through 5.15.Not affected 6.1.153 through 6.1.Not affected 6.6.107 through 6.6.Not affected 6.12.48 through 6.12.Not affected 6.16.8 through 6.16.*Not affected 6.17 and laterNot affected

Product

Versions

LinuxLinux

493fb30011b3ab5173cef96f1d1ce126da051792 to before 13ab9adef3cd386511c930a9660ae06595007f89Affected
493fb30011b3ab5173cef96f1d1ce126da051792 to before 6e4016c0dca53afc71e3b99e24252b63417395dfAffected
493fb30011b3ab5173cef96f1d1ce126da051792 to before b9721a023df38cf44a88f2739b4cf51efd051f85Affected
493fb30011b3ab5173cef96f1d1ce126da051792 to before b905b2acb3a0bbb08ad9be9984d8cdabdf827315Affected
493fb30011b3ab5173cef96f1d1ce126da051792 to before 23431998a37764c464737b855c71a81d50992e98Affected
493fb30011b3ab5173cef96f1d1ce126da051792 to before a30afd6617c30aaa338d1dbcb1e34e7a1890085cAffected
493fb30011b3ab5173cef96f1d1ce126da051792 to before c62580674ce5feb1be4f90b5873ff3ce50e0a1dbAffected
493fb30011b3ab5173cef96f1d1ce126da051792 to before 915470e1b44e71d1dd07ee067276f003c3521ee3Affected

LinuxLinux

3.13Affected
before 3.13Not affected
5.4.300 through 5.4.*Not affected
5.10.245 through 5.10.*Not affected
5.15.194 through 5.15.*Not affected
6.1.153 through 6.1.*Not affected
6.6.107 through 6.6.*Not affected
6.12.48 through 6.12.*Not affected
6.16.8 through 6.16.*Not affected
6.17 and laterNot affected

References

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