{"id":"CVE-2026-90032","aliases":[],"url":"https://o3.security/vulnerability/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->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.","published":"2026-09-16T10:33:33.197Z","modified":"2026-09-17T03:47:27.535061344Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.270"}],"fix":null,"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-17T03:47:27.535061344Z"}}