{"id":"CVE-2026-89890","published":"2026-09-16T11:16:57.610","lastModified":"2026-09-16T15:18:15.500","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: go7007: defer the ALSA v4l2 put until card release\n\ngo7007_snd_init() already takes a v4l2_device reference for the ALSA\nside, but go7007_snd_remove() drops it immediately after calling\nsnd_card_free_when_closed().\n\nThat is too early when a userspace process still has the capture PCM open.\nThe ALSA card and its PCM callbacks remain alive until the last file is\nclosed, so the release path can still reach struct go7007 through\npcm->private_data and call go7007_snd_hw_free() after the V4L2 release path\nhas freed the object.\n\nMove the matching v4l2_device_put() to the ALSA card private_free callback\nso the existing ALSA reference covers the whole deferred card lifetime.","cvssScore":7.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0745a59945d927652d892437f9647ed6e87c0677","tags":[]},{"url":"https://git.kernel.org/stable/c/1bd456afeb8a515137e567967069fce6f8fcd23e","tags":[]},{"url":"https://git.kernel.org/stable/c/1c57d1a3396b2d767d58f10dff09bb397586c714","tags":[]},{"url":"https://git.kernel.org/stable/c/1c9fdd9465211432d5c0ff70caaec0be245823d5","tags":[]},{"url":"https://git.kernel.org/stable/c/29fe4d38fb59ec28ca656cb2dabc2b0f78e78980","tags":[]},{"url":"https://git.kernel.org/stable/c/9c4f9628b8558c87903492a777834cc5be14ded3","tags":[]},{"url":"https://git.kernel.org/stable/c/b7a0de398ad510426db9c8e96c516ef7abf48b0e","tags":[]},{"url":"https://git.kernel.org/stable/c/e6f1a1ac9b8ccabfec548aef0d0d93eaf4dba4f4","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The flaw allows a userspace process to hold onto a capture PCM open, leading to a potential use-after-free condition in the ALSA card and its PCM callbacks, which could be exploited to execute arbitrary code.","exploitability":"Exploitation requires a userspace process to keep the capture PCM open while the V4L2 device is being released, making it moderately difficult to exploit.","blast_radius":"If exploited, the vulnerability could lead to arbitrary code execution on the system, potentially allowing an attacker to gain full control over the affected device.","remediation":"Upgrade to the Linux kernel version 6.2.0 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","kernel","alsa","v4l2"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-08T08:43:11.209Z"}}