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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
493fb30011b3ab5173cef96f1d1ce126da051792 to < 13ab9adef3cd386511c930a9660ae06595007f89affected493fb30011b3ab5173cef96f1d1ce126da051792 to < 6e4016c0dca53afc71e3b99e24252b63417395dfaffected493fb30011b3ab5173cef96f1d1ce126da051792 to < b9721a023df38cf44a88f2739b4cf51efd051f85affected493fb30011b3ab5173cef96f1d1ce126da051792 to < b905b2acb3a0bbb08ad9be9984d8cdabdf827315affected493fb30011b3ab5173cef96f1d1ce126da051792 to < 23431998a37764c464737b855c71a81d50992e98affected493fb30011b3ab5173cef96f1d1ce126da051792 to < a30afd6617c30aaa338d1dbcb1e34e7a1890085caffected493fb30011b3ab5173cef96f1d1ce126da051792 to < c62580674ce5feb1be4f90b5873ff3ce50e0a1dbaffected493fb30011b3ab5173cef96f1d1ce126da051792 to < 915470e1b44e71d1dd07ee067276f003c3521ee3affected
Linux Linux
Default version status: affected
3.13affected0 to < 3.13unaffected5.4.300 to ≤ 5.4.*unaffected5.10.245 to ≤ 5.10.*unaffected5.15.194 to ≤ 5.15.*unaffected6.1.153 to ≤ 6.1.*unaffected6.6.107 to ≤ 6.6.*unaffected6.12.48 to ≤ 6.12.*unaffected6.16.8 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/13ab9adef3cd386511c930a9660ae06595007f89 ↗
- https://git.kernel.org/stable/c/6e4016c0dca53afc71e3b99e24252b63417395df ↗
- https://git.kernel.org/stable/c/b9721a023df38cf44a88f2739b4cf51efd051f85 ↗
- https://git.kernel.org/stable/c/b905b2acb3a0bbb08ad9be9984d8cdabdf827315 ↗
- https://git.kernel.org/stable/c/23431998a37764c464737b855c71a81d50992e98 ↗
- https://git.kernel.org/stable/c/a30afd6617c30aaa338d1dbcb1e34e7a1890085c ↗
- https://git.kernel.org/stable/c/c62580674ce5feb1be4f90b5873ff3ce50e0a1db ↗
- https://git.kernel.org/stable/c/915470e1b44e71d1dd07ee067276f003c3521ee3 ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗