{"id":"CVE-2026-90032","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: usbtv: keep device alive while ALSA card exists\n\nThe ALSA PCM callbacks store the driver state in pcm->private_data","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: usbtv: keep device alive while ALSA card exists\n\nThe ALSA PCM callbacks store the driver state in pcm->private_data. An\nopen PCM file can outlive USB disconnect …","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 63ddf68de52efaac40a9287e44266ac30e71dd36 < 97b5e8b22b98e287481a97a9a4cfebbb348738a5","Linux >= 63ddf68de52efaac40a9287e44266ac30e71dd36 < 503be26ff888cb3576e55d251895d290e8146f27","Linux >= 63ddf68de52efaac40a9287e44266ac30e71dd36 < be0f7745f883386e5263b4e475686a81dfa87175","Linux >= 63ddf68de52efaac40a9287e44266ac30e71dd36 < 67374e3a00814dcdd46e9feca61f69f7f2d81957","Linux >= 63ddf68de52efaac40a9287e44266ac30e71dd36 < 239d1683e08b2aee2a15ef35706e1ea9a76681d8","Linux >= 63ddf68de52efaac40a9287e44266ac30e71dd36 < 7690a86b193271322cd31ab77349a87aa10858e4","Linux >= 63ddf68de52efaac40a9287e44266ac30e71dd36 < 1618257cb0aba4ce342ae8c0228368c24161f5fb","Linux >= 63ddf68de52efaac40a9287e44266ac30e71dd36 < fc530fe168bb2b745a93f553ad21fc25fd9cba3d","Linux 3.18"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:18:26.280","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90032","references":[{"url":"https://git.kernel.org/stable/c/1618257cb0aba4ce342ae8c0228368c24161f5fb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/239d1683e08b2aee2a15ef35706e1ea9a76681d8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/503be26ff888cb3576e55d251895d290e8146f27","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/67374e3a00814dcdd46e9feca61f69f7f2d81957","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7690a86b193271322cd31ab77349a87aa10858e4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/97b5e8b22b98e287481a97a9a4cfebbb348738a5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/be0f7745f883386e5263b4e475686a81dfa87175","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fc530fe168bb2b745a93f553ad21fc25fd9cba3d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.932Z","epss":0.00153,"epssPercentile":0.048,"slug":"CVE-2026-90032","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmedia: usbtv: keep device alive while ALSA card exists\n\nThe ALSA PCM callbacks store the driver state in pcm->private_data. An\nopen PCM file can outlive USB disconnect because usbtv_audio_free() uses\nsnd_card_free_when_closed(). The disconnect path can then drop the V4L2\ndevice reference and free struct usbtv before ALSA releases the substream,\nso a later close dereferences freed memory in snd_usbtv_pcm_close().\n\nTake a V4L2 device reference for the ALSA card and drop it from the card\nprivate_free callback. This keeps struct usbtv valid until ALSA has closed\nthe remaining files and freed the card.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204993,"id":"CVE-2026-90032","ts":1789570702046,"field":"cvss","old":null,"new":"7.8"},{"seq":204992,"id":"CVE-2026-90032","ts":1789570702046,"field":"severity","old":"none","new":"high"}]}