CVE-2025-38009: debian debian_linux
Vulnerability summary
CVE-2025-38009 is a medium (CVSS 5.5) vulnerability in debian debian_linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.4% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 42 · Related 40Timeline
- 18-06-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
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).
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.21%
Chance of exploitation in the next 30 days
Percentile
10%
Versus all other CVEs
30-day change
+0.01 pp
From 0.20% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu140 products
- linuxAll versions (No fix recorded) | < 5.15.0-144.157 | < 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1088.95 | < 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.140-1 | < 6.12.30-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 2ac515a5d74f26963362d5da9589c67ca3663338, < ff0f820fa5b99035b3c654dd531226d8d83aec5f | ≥ 2ac515a5d74f26963362d5da9589c67ca3663338, < ca5b213bf4b4224335a8131a26805d16503fca5f | ≥ 2ac515a5d74f26963362d5da9589c67ca3663338, < b892e830d1ea8c5475254b98827771f7366f1039 | ≥ 2ac515a5d74f26963362d5da9589c67ca3663338, < 5e700b06b970fc19e3a1ecb244e14785f3fbb8e3 | ≥ 2ac515a5d74f26963362d5da9589c67ca3663338, < 2b81e76db3667d1f7f2ad44e9835cdaf8dea95a8 | ≥ 2ac515a5d74f26963362d5da9589c67ca3663338, < e7bfbda5fddd27f3158e723d641c0fcdfb0552a7 | ≥ 2ac515a5d74f26963362d5da9589c67ca3663338, < 78ab4be549533432d97ea8989d2f00b508fa68d8 | 5.2
- linux_kernel≥ 5.2, < 5.10.238 | ≥ 5.11, < 5.15.184 | ≥ 5.16, < 6.1.140 | ≥ 6.2, < 6.6.92 | ≥ 6.7, < 6.12.30 | ≥ 6.13, < 6.14.8 | 6.15:rc1 | 6.15:rc2 | 6.15:rc3 | 6.15:rc4 | 6.15:rc5 | 6.15:rc6
3 vendors · 144 products
References
42 links- lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlThird Party Advisory