CVE-2026-31701In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: take a reference on the USB device in create_card() The caiaq driver stores a pointer to the parent USB device in cdev…
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In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: take a reference on the USB device in create_card() The caiaq driver stores a pointer to the parent USB device in cdev->chip.dev but never takes a reference on it. The card's private_free callback, snd_usb_caiaq_card_free(), can run asynchronously via snd_card_free_when_closed() after the USB device has already been disconnected and freed, so any access to cdev->chip.dev in that path dereferences a freed usb_device. On top of the refcounting issue, the current card_free implementation calls usb_reset_device(cdev->chip.dev). A reset in a free callback is inappropriate: the device is going away, the call takes the device lock in a teardown context, and the reset races with the disconnect path that the callback is already cleaning up after. Take a reference on the USB device in create_card() with usb_get_dev(), drop it with usb_put_dev() in the free callback, and remove the usb_reset_device() call.
- 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
- Not given
- NVD analysis
- Modified
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 6.13 before 6.18.25; from 6.19 before 7.0.2; 6.13; 7.1; 7.1 | NVD |
References
- https://git.kernel.org/stable/c/1d9be95aee6c6246a21752e60c9519902649f482patch
- https://git.kernel.org/stable/c/493b3a682ededc804555755f5d2193201339612d
- https://git.kernel.org/stable/c/59b622a043cffc58b7638cd85ae6c30a0904f8e6patch
- https://git.kernel.org/stable/c/6473ed16df1fe88051140611b3eb9a49be7f429epatch
- https://git.kernel.org/stable/c/80bb50e2d459213cccff3111d5ef98ed4238c0d5patch
- https://git.kernel.org/stable/c/ac7345f68cda6989016d85d63f7b244c064aa8f6
- https://git.kernel.org/stable/c/dbcf7588e8dea017ddb3f18ec2766f7d2e5f2a0e
- https://git.kernel.org/stable/c/f6634af5de728a46792f674a66d7843570cb68f7patch
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.