{"id":"CVE-2026-90032","summary":"media: usbtv: keep device alive while ALSA card exists","details":"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-\u003eprivate_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.","modified":"2026-09-18T03:48:35.316951048Z","published":"2026-09-16T10:33:33.197Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90032.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1618257cb0aba4ce342ae8c0228368c24161f5fb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/239d1683e08b2aee2a15ef35706e1ea9a76681d8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/503be26ff888cb3576e55d251895d290e8146f27"},{"type":"WEB","url":"https://git.kernel.org/stable/c/67374e3a00814dcdd46e9feca61f69f7f2d81957"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7690a86b193271322cd31ab77349a87aa10858e4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/97b5e8b22b98e287481a97a9a4cfebbb348738a5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/be0f7745f883386e5263b4e475686a81dfa87175"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc530fe168bb2b745a93f553ad21fc25fd9cba3d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90032.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90032"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"63ddf68de52efaac40a9287e44266ac30e71dd36"},{"fixed":"97b5e8b22b98e287481a97a9a4cfebbb348738a5"},{"fixed":"503be26ff888cb3576e55d251895d290e8146f27"},{"fixed":"be0f7745f883386e5263b4e475686a81dfa87175"},{"fixed":"67374e3a00814dcdd46e9feca61f69f7f2d81957"},{"fixed":"239d1683e08b2aee2a15ef35706e1ea9a76681d8"},{"fixed":"7690a86b193271322cd31ab77349a87aa10858e4"},{"fixed":"1618257cb0aba4ce342ae8c0228368c24161f5fb"},{"fixed":"fc530fe168bb2b745a93f553ad21fc25fd9cba3d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90032.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.18.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90032.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}