Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:EOL][EOL]wifi: mt76: disable napi on driver removal[EOL][EOL]A warning on driver removal started occurring after commit 9dd05df8403b[EOL]("net: warn if NAPI instance wasn't shut down"). Disable tx napi before[EOL]deleting it in mt76_dma_cleanup().[EOL][EOL] WARNING: CPU: 4 PID: 18828 at net/core/dev.c:7288 __netif_napi_del_locked+0xf0/0x100[EOL] CPU: 4 UID: 0 PID: 18828 Comm: modprobe Not tainted 6.15.0-rc4 #4 PREEMPT(lazy)[EOL] Hardware name: ASUS System Product Name/PRIME X670E-PRO WIFI, BIOS 3035 09/05/2024[EOL] RIP: 0010:__netif_napi_del_locked+0xf0/0x100[EOL] Call Trace:[EOL] <TASK>[EOL] mt76_dma_cleanup+0x54/0x2f0 [mt76][EOL] mt7921_pci_remove+0xd5/0x190 [mt7921e][EOL] pci_device_remove+0x47/0xc0[EOL] device_release_driver_internal+0x19e/0x200[EOL] driver_detach+0x48/0x90[EOL] bus_remove_driver+0x6d/0xf0[EOL] pci_unregister_driver+0x2e/0xb0[EOL] __do_sys_delete_module.isra.0+0x197/0x2e0[EOL] do_syscall_64+0x7b/0x160[EOL] entry_SYSCALL_64_after_hwframe+0x76/0x7e[EOL][EOL]Tested with mt7921e but the same pattern can be actually applied to other[EOL]mt76 drivers calling mt76_dma_cleanup() during removal. Tx napi is enabled[EOL]in their *_dma_init() functions and only toggled off and on again inside[EOL]their suspend/resume/reset paths. So it should be okay to disable tx[EOL]napi in such a generic way.[EOL][EOL]Found by Linux Verification Center (linuxtesting.org).

CREATE(Triage):(User=lchen-cn) [CVE-2025-38009 (https://nvd.nist.gov/vuln/detail/CVE-2025-38009)