Medium 5.5Published Jul 3, 2025

CVE-2025-38105ALSA: usb-audio: Kill timer properly at removal

Updated under an hour ago (Oct 28, 2026, 6:50 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Kill timer properly at removal The USB-audio MIDI code initializes the timer, but in a rare case, the driver might be freed without the disconnect call. This leaves the timer in an active state while the assigned object is released via snd_usbmidi_free(), which ends up with a kernel warning when the debug configuration is enabled, as spotted by fuzzer. For avoiding the problem, put timer_shutdown_sync() at snd_usbmidi_free(), so that the timer can be killed properly. While we're at it, replace the existing timer_delete_sync() at the disconnect callback with timer_shutdown_sync(), too.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c88469704d63787e8d44ca5ea1c1bd0adc29572d before 06513dd6d32c37d0364db8488cfdf3e14da238a8; from c88469704d63787e8d44ca5ea1c1bd0adc29572d before efaf61052b8ff9ee8968912fbaf02c2847c78ede; from c88469704d63787e8d44ca5ea1c1bd0adc29572d before 647410a7da46067953a53c0d03f8680eff570959; from c88469704d63787e8d44ca5ea1c1bd0adc29572d before c611b9e55174e439dcd85a72969b43a95f3827a4; from c88469704d63787e8d44ca5ea1c1bd0adc29572d before 62066758d2ae169278e5d6aea5995b1b6f6ddeb5; from c88469704d63787e8d44ca5ea1c1bd0adc29572d before 0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 2.6.14 before 6.6.111; from 6.7 before 6.12.52; from 6.13 before 6.15.3	NVD

References

References

https://git.kernel.org/stable/c/06513dd6d32c37d0364db8488cfdf3e14da238a8
https://git.kernel.org/stable/c/efaf61052b8ff9ee8968912fbaf02c2847c78ede
https://git.kernel.org/stable/c/647410a7da46067953a53c0d03f8680eff570959	patch
https://git.kernel.org/stable/c/c611b9e55174e439dcd85a72969b43a95f3827a4	patch
https://git.kernel.org/stable/c/62066758d2ae169278e5d6aea5995b1b6f6ddeb5	patch
https://git.kernel.org/stable/c/0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1	patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.