Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4dd821dcbfcecf7af6a08370b0b217cde2818acf before 493b3a682ededc804555755f5d2193201339612d; affected cadf1d8e9ddcd74584ec961aeac14ac549b261d8 before dbcf7588e8dea017ddb3f18ec2766f7d2e5f2a0e; affected 237f3faf0177bdde728fa3106d730d806436aa4d before ac7345f68cda6989016d85d63f7b244c064aa8f6; affected 4507a8b9b30344c5ddd8219945f446d47e966a6d before f6634af5de728a46792f674a66d7843570cb68f7; affected a3f9314752dbb6f6aa1f0f2b4c58243bda800738 before 1d9be95aee6c6246a21752e60c9519902649f482; affected b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c before 6473ed16df1fe88051140611b3eb9a49be7f429e; affected b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c before 59b622a043cffc58b7638cd85ae6c30a0904f8e6; affected b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c before 80bb50e2d459213cccff3111d5ef98ed4238c0d5; affected 3993edf44d3df7b6e8c753eac6ac8783473fcbab; affected ebad462eec93b0f701dfe4de98990e7355283801; affected dd0de8cb708951cebf727aa045e8242ba651bb52; affected 5.10.231 before 5.10.258; affected 5.15.174 before 5.15.209; affected 6.1.120 before 6.1.175; affected 6.6.64 before 6.6.136; affected 6.12.2 before 6.12.84; affected 4.19.325 before 4.20; affected 5.4.287 before 5.5; affected 6.11.11 before 6.12 |
| Linux / Linux | affected 6.13; unaffected 0 before 6.13; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.136 through 6.6.*; unaffected 6.12.84 through 6.12.*; unaffected 6.18.25 through 6.18.*; unaffected 7.0.2 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/493b3a682ededc804555755f5d2193201339612d
- https://git.kernel.org/stable/c/dbcf7588e8dea017ddb3f18ec2766f7d2e5f2a0e
- https://git.kernel.org/stable/c/ac7345f68cda6989016d85d63f7b244c064aa8f6
- https://git.kernel.org/stable/c/f6634af5de728a46792f674a66d7843570cb68f7
- https://git.kernel.org/stable/c/1d9be95aee6c6246a21752e60c9519902649f482
- https://git.kernel.org/stable/c/6473ed16df1fe88051140611b3eb9a49be7f429e
- https://git.kernel.org/stable/c/59b622a043cffc58b7638cd85ae6c30a0904f8e6
- https://git.kernel.org/stable/c/80bb50e2d459213cccff3111d5ef98ed4238c0d5