CVE-2025-38009wifi: mt76: disable napi on driver removal
- 5.5MediumCVSS base score
- 0.21%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: disable napi on driver removal A warning on driver removal started occurring after commit 9dd05df8403b ("net: warn if NAPI instance wasn't shut down"). Disable tx napi before deleting it in mt76_dma_cleanup(). WARNING: CPU: 4 PID: 18828 at net/core/dev.c:7288 __netif_napi_del_locked+0xf0/0x100 CPU: 4 UID: 0 PID: 18828 Comm: modprobe Not tainted 6.15.0-rc4 #4 PREEMPT(lazy) Hardware name: ASUS System Product Name/PRIME X670E-PRO WIFI, BIOS 3035 09/05/2024 RIP: 0010:__netif_napi_del_locked+0xf0/0x100 Call Trace: <TASK> mt76_dma_cleanup+0x54/0x2f0 [mt76] mt7921_pci_remove+0xd5/0x190 [mt7921e] pci_device_remove+0x47/0xc0 device_release_driver_internal+0x19e/0x200 driver_detach+0x48/0x90 bus_remove_driver+0x6d/0xf0 pci_unregister_driver+0x2e/0xb0 __do_sys_delete_module.isra.0+0x197/0x2e0 do_syscall_64+0x7b/0x160 entry_SYSCALL_64_after_hwframe+0x76/0x7e Tested with mt7921e but the same pattern can be actually applied to other mt76 drivers calling mt76_dma_cleanup() during removal. Tx napi is enabled in their *_dma_init() functions and only toggled off and on again inside their suspend/resume/reset paths. So it should be okay to disable tx napi in such a generic way. Found by Linux Verification Center (linuxtesting.org).
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 17 months later
· 17 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 2ac515a5d74f26963362d5da9589c67ca3663338 – < ff0f820fa5b99035b3c654dd531226d8d83aec5f
- affected 2ac515a5d74f26963362d5da9589c67ca3663338 – < ca5b213bf4b4224335a8131a26805d16503fca5f
- affected 2ac515a5d74f26963362d5da9589c67ca3663338 – < b892e830d1ea8c5475254b98827771f7366f1039
- affected 2ac515a5d74f26963362d5da9589c67ca3663338 – < 5e700b06b970fc19e3a1ecb244e14785f3fbb8e3
- affected 2ac515a5d74f26963362d5da9589c67ca3663338 – < 2b81e76db3667d1f7f2ad44e9835cdaf8dea95a8
- affected 2ac515a5d74f26963362d5da9589c67ca3663338 – < e7bfbda5fddd27f3158e723d641c0fcdfb0552a7
- affected 2ac515a5d74f26963362d5da9589c67ca3663338 – < 78ab4be549533432d97ea8989d2f00b508fa68d8
- affected 5.2
- unaffected < 5.2
- unaffected 5.10.238 – ≤ 5.10.*
- unaffected 5.15.184 – ≤ 5.15.*
- unaffected 6.1.140 – ≤ 6.1.*
- unaffected 6.6.92 – ≤ 6.6.*
- unaffected 6.12.30 – ≤ 6.12.*
- unaffected 6.14.8 – ≤ 6.14.*
- unaffected 6.15 – ≤ *
References
References9
- https://git.kernel.org/stable/c/ff0f820fa5b99035b3c654dd531226d8d83aec5f (opens in a new tab)
- https://git.kernel.org/stable/c/ca5b213bf4b4224335a8131a26805d16503fca5f (opens in a new tab)
- https://git.kernel.org/stable/c/b892e830d1ea8c5475254b98827771f7366f1039 (opens in a new tab)
- https://git.kernel.org/stable/c/5e700b06b970fc19e3a1ecb244e14785f3fbb8e3 (opens in a new tab)
- https://git.kernel.org/stable/c/2b81e76db3667d1f7f2ad44e9835cdaf8dea95a8 (opens in a new tab)
- https://git.kernel.org/stable/c/e7bfbda5fddd27f3158e723d641c0fcdfb0552a7 (opens in a new tab)
- https://git.kernel.org/stable/c/78ab4be549533432d97ea8989d2f00b508fa68d8 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-27862 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-38009)Record last updated .