CVE-2026-90032

UNKNOWN 0.0

media: usbtv: keep device alive while ALSA card exists

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	Sep 16, 2026

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Affected Versions

Linux / Linux

63ddf68de52efaac40a9287e44266ac30e71dd36 < 97b5e8b22b98e287481a97a9a4cfebbb348738a5 63ddf68de52efaac40a9287e44266ac30e71dd36 < 503be26ff888cb3576e55d251895d290e8146f27 63ddf68de52efaac40a9287e44266ac30e71dd36 < be0f7745f883386e5263b4e475686a81dfa87175 63ddf68de52efaac40a9287e44266ac30e71dd36 < 67374e3a00814dcdd46e9feca61f69f7f2d81957 63ddf68de52efaac40a9287e44266ac30e71dd36 < 239d1683e08b2aee2a15ef35706e1ea9a76681d8 63ddf68de52efaac40a9287e44266ac30e71dd36 < 7690a86b193271322cd31ab77349a87aa10858e4 63ddf68de52efaac40a9287e44266ac30e71dd36 < 1618257cb0aba4ce342ae8c0228368c24161f5fb 63ddf68de52efaac40a9287e44266ac30e71dd36 < fc530fe168bb2b745a93f553ad21fc25fd9cba3d

Linux / Linux

3.18

References

NVD ↗ CVE.org ↗ EPSS Data ↗