CVE-2026-90032media: usbtv: keep device alive while ALSA card exists
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: media: usbtv: keep device alive while ALSA card exists The ALSA PCM callbacks store the driver state in pcm->private_data. An open PCM file can outlive USB disconnect because usbtv_audio_free() uses snd_card_free_when_closed(). The disconnect path can then drop the V4L2 device reference and free struct usbtv before ALSA releases the substream, so a later close dereferences freed memory in snd_usbtv_pcm_close(). Take a V4L2 device reference for the ALSA card and drop it from the card private_free callback. This keeps struct usbtv valid until ALSA has closed the remaining files and freed the card.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 63ddf68de52efaac40a9287e44266ac30e71dd36 before 97b5e8b22b98e287481a97a9a4cfebbb348738a5; from 63ddf68de52efaac40a9287e44266ac30e71dd36 before 503be26ff888cb3576e55d251895d290e8146f27; from 63ddf68de52efaac40a9287e44266ac30e71dd36 before be0f7745f883386e5263b4e475686a81dfa87175; from 63ddf68de52efaac40a9287e44266ac30e71dd36 before 67374e3a00814dcdd46e9feca61f69f7f2d81957; from 63ddf68de52efaac40a9287e44266ac30e71dd36 before 239d1683e08b2aee2a15ef35706e1ea9a76681d8; from 63ddf68de52efaac40a9287e44266ac30e71dd36 before 7690a86b193271322cd31ab77349a87aa10858e4; from 63ddf68de52efaac40a9287e44266ac30e71dd36 before 1618257cb0aba4ce342ae8c0228368c24161f5fb; from 63ddf68de52efaac40a9287e44266ac30e71dd36 before fc530fe168bb2b745a93f553ad21fc25fd9cba3d | CNA record |
References
- https://git.kernel.org/stable/c/97b5e8b22b98e287481a97a9a4cfebbb348738a5
- https://git.kernel.org/stable/c/503be26ff888cb3576e55d251895d290e8146f27
- https://git.kernel.org/stable/c/be0f7745f883386e5263b4e475686a81dfa87175
- https://git.kernel.org/stable/c/67374e3a00814dcdd46e9feca61f69f7f2d81957
- https://git.kernel.org/stable/c/239d1683e08b2aee2a15ef35706e1ea9a76681d8
- https://git.kernel.org/stable/c/7690a86b193271322cd31ab77349a87aa10858e4
- https://git.kernel.org/stable/c/1618257cb0aba4ce342ae8c0228368c24161f5fb
- https://git.kernel.org/stable/c/fc530fe168bb2b745a93f553ad21fc25fd9cba3d
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.