{"id":"CVE-2025-38009","title":"wifi: mt76: disable napi on driver removal","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: disable napi on driver removal\n\nA warning on driver removal started occurring after commit 9dd05df8403b\n(\"net: warn if NAPI instance wasn't shut down\"). Dis…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < ff0f820fa5b99035b3c654dd531226d8d83aec5f","Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < ca5b213bf4b4224335a8131a26805d16503fca5f","Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < b892e830d1ea8c5475254b98827771f7366f1039","Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < 5e700b06b970fc19e3a1ecb244e14785f3fbb8e3","Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < 2b81e76db3667d1f7f2ad44e9835cdaf8dea95a8","Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < e7bfbda5fddd27f3158e723d641c0fcdfb0552a7","Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < 78ab4be549533432d97ea8989d2f00b508fa68d8","Linux 5.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:47:51.039147Z"},"published":"2025-06-18","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:52:11.851Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38009","references":[{"url":"https://git.kernel.org/stable/c/ff0f820fa5b99035b3c654dd531226d8d83aec5f"},{"url":"https://git.kernel.org/stable/c/ca5b213bf4b4224335a8131a26805d16503fca5f"},{"url":"https://git.kernel.org/stable/c/b892e830d1ea8c5475254b98827771f7366f1039"},{"url":"https://git.kernel.org/stable/c/5e700b06b970fc19e3a1ecb244e14785f3fbb8e3"},{"url":"https://git.kernel.org/stable/c/2b81e76db3667d1f7f2ad44e9835cdaf8dea95a8"},{"url":"https://git.kernel.org/stable/c/e7bfbda5fddd27f3158e723d641c0fcdfb0552a7"},{"url":"https://git.kernel.org/stable/c/78ab4be549533432d97ea8989d2f00b508fa68d8"}],"tags":["cve.org"],"epss":0.00214,"epssPercentile":0.11814,"ingestedAt":"2026-11-05T22:38:31.906Z","slug":"CVE-2025-38009","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: disable napi on driver removal\n\nA warning on driver removal started occurring after commit 9dd05df8403b\n(\"net: warn if NAPI instance wasn't shut down\"). Disable tx napi before\ndeleting it in mt76_dma_cleanup().\n\n WARNING: CPU: 4 PID: 18828 at net/core/dev.c:7288 __netif_napi_del_locked+0xf0/0x100\n CPU: 4 UID: 0 PID: 18828 Comm: modprobe Not tainted 6.15.0-rc4 #4 PREEMPT(lazy)\n Hardware name: ASUS System Product Name/PRIME X670E-PRO WIFI, BIOS 3035 09/05/2024\n RIP: 0010:__netif_napi_del_locked+0xf0/0x100\n Call Trace:\n <TASK>\n mt76_dma_cleanup+0x54/0x2f0 [mt76]\n mt7921_pci_remove+0xd5/0x190 [mt7921e]\n pci_device_remove+0x47/0xc0\n device_release_driver_internal+0x19e/0x200\n driver_detach+0x48/0x90\n bus_remove_driver+0x6d/0xf0\n pci_unregister_driver+0x2e/0xb0\n __do_sys_delete_module.isra.0+0x197/0x2e0\n do_syscall_64+0x7b/0x160\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nTested with mt7921e but the same pattern can be actually applied to other\nmt76 drivers calling mt76_dma_cleanup() during removal. Tx napi is enabled\nin their *_dma_init() functions and only toggled off and on again inside\ntheir suspend/resume/reset paths. So it should be okay to disable tx\nnapi in such a generic way.\n\nFound by Linux Verification Center (linuxtesting.org).\n\n## Affected\n\n- `Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < ff0f820fa5b99035b3c654dd531226d8d83aec5f`\n- `Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < ca5b213bf4b4224335a8131a26805d16503fca5f`\n- `Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < b892e830d1ea8c5475254b98827771f7366f1039`\n- `Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < 5e700b06b970fc19e3a1ecb244e14785f3fbb8e3`\n- `Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < 2b81e76db3667d1f7f2ad44e9835cdaf8dea95a8`\n- `Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < e7bfbda5fddd27f3158e723d641c0fcdfb0552a7`\n- `Linux >= 2ac515a5d74f26963362d5da9589c67ca3663338 < 78ab4be549533432d97ea8989d2f00b508fa68d8`\n- `Linux 5.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}