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CVE-2026-89890— media: go7007: defer the ALSA v4l2 put until card release

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，以下漏洞已得到修复： 媒体子系统：go7007：延迟执行 ALSA 侧的 v4l2_device 释放 已在 ALSA 侧获取了一个 引用，但 在调用 后立即释放了该引用。 当用户空间进程仍然打开捕获 PCM 设备时，这种释放时机过早。ALSA 声卡及其 PCM 回调函数会保持存活，直到最后一个文件句柄被关闭。因此，释放路径可能通过 访问 ，并在 V4L2 释放路径已经释放该对象之后调用 ，从而导致对已释放内存的访问（use-after-free）。 修复方法是将对应的 调用移至 ALSA

CVSS 7.8 · High EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux d5d3a7cc127d096c22ad63c4ff72970e1beb22ef< 1c57d1a3396b2d767d58f10dff09bb397586c714 affected
d5d3a7cc127d096c22ad63c4ff72970e1beb22ef< 9c4f9628b8558c87903492a777834cc5be14ded3 affected
d5d3a7cc127d096c22ad63c4ff72970e1beb22ef< b7a0de398ad510426db9c8e96c516ef7abf48b0e affected
d5d3a7cc127d096c22ad63c4ff72970e1beb22ef< 1c9fdd9465211432d5c0ff70caaec0be245823d5 affected
d5d3a7cc127d096c22ad63c4ff72970e1beb22ef< 29fe4d38fb59ec28ca656cb2dabc2b0f78e78980 affected
d5d3a7cc127d096c22ad63c4ff72970e1beb22ef< 0745a59945d927652d892437f9647ed6e87c0677 affected
d5d3a7cc127d096c22ad63c4ff72970e1beb22ef< e6f1a1ac9b8ccabfec548aef0d0d93eaf4dba4f4 affected
d5d3a7cc127d096c22ad63c4ff72970e1beb22ef< 1bd456afeb8a515137e567967069fce6f8fcd23e affected
… +10 more rows
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I. Basic Information for CVE-2026-89890

Vulnerability Information
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Vulnerability Title
media: go7007: defer the ALSA v4l2 put until card release
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: go7007: defer the ALSA v4l2 put until card release go7007_snd_init() already takes a v4l2_device reference for the ALSA side, but go7007_snd_remove() drops it immediately after calling snd_card_free_when_closed(). That is too early when a userspace process still has the capture PCM open. The ALSA card and its PCM callbacks remain alive until the last file is closed, so the release path can still reach struct go7007 through pcm->private_data and call go7007_snd_hw_free() after the V4L2 release path has freed the object. Move the matching v4l2_device_put() to the ALSA card private_free callback so the existing ALSA reference covers the whole deferred card lifetime.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux d5d3a7cc127d096c22ad63c4ff72970e1beb22ef ~ 1c57d1a3396b2d767d58f10dff09bb397586c714 -
Linux Linux 3.10 -

II. Public POCs for CVE-2026-89890

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III. Intelligence Information for CVE-2026-89890

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Other References for CVE-2026-89890 (8)

Same Patch Batch · Linux · 2026-09-16 · 276 CVEs total

CVE-2026-90048 9.8 CRITICAL fs/ntfs3: fix slab-out-of-bounds write in ni_create_attr_list()
CVE-2026-90012 9.8 CRITICAL spi: Fix DMA mapping ownership on partial map failure
CVE-2026-89970 9.8 CRITICAL nvmet-auth: Synchronize timeout work during SQ teardown
CVE-2026-89857 9.8 CRITICAL scsi: qla2xxx: Hold qpair lock when sending NVMe LS reject
CVE-2026-89969 9.8 CRITICAL nvmet-tcp: fix out-of-bounds write when receiving an over-long PDU
CVE-2026-89847 9.8 CRITICAL scsi: qla2xxx: Avoid double completion in async IOCB timeout
CVE-2026-89972 9.8 CRITICAL nvme: add missing SRCU grace period in error path
CVE-2026-89990 9.8 CRITICAL ceph: lock mutex in ceph_mds_check_access()
CVE-2026-90036 9.8 CRITICAL NFSD: Prevent client use-after-free during blocked-lock reaping
CVE-2026-90038 9.8 CRITICAL NFSD: Prevent client use-after-free during export state revocation
CVE-2026-90037 9.8 CRITICAL NFSD: Prevent client use-after-free during close_lru reaping
CVE-2026-89788 9.8 CRITICAL ksmbd: fix tree connection use-after-free in smb2_tree_connect()
CVE-2026-89783 9.8 CRITICAL xfrm6: fix out-of-bounds write in xfrm6_input_addr() when secpath is full
CVE-2026-90042 9.8 CRITICAL ceph: properly decrypt filenames in vmalloc() buffers
CVE-2026-89778 9.8 CRITICAL isofs: fix out-of-bounds page array access on empty zisofs block
CVE-2026-89915 9.3 CRITICAL KVM: arm64: Remove VM-wide VNCR mapping counter
CVE-2026-90049 9.3 CRITICAL net: skbuff: don't skb_tx_error() the source skb in skb_zerocopy()
CVE-2026-89775 9.3 CRITICAL KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation
CVE-2026-89916 9.3 CRITICAL KVM: arm64: Make VNCR invalidation participate in MMU invalidation retry
CVE-2026-89930 9.3 CRITICAL KVM: nVMX: Service local TLB flushes on failed nested VM-Enter

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-89890

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