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CVE-2026-23089— ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()

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.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于释放后重用，可能导致系统崩溃。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 6639b6c2367f884ca172b78d69f7da17bfab2e5e< 51b1aa6fe7dc87356ba58df06afb9677c9b841ea affected
6639b6c2367f884ca172b78d69f7da17bfab2e5e< 56fb6efd5d04caf6f14994d51ec85393b9a896c6 affected
6639b6c2367f884ca172b78d69f7da17bfab2e5e< 7009daeefa945973a530b2f605fe445fc03747af affected
6639b6c2367f884ca172b78d69f7da17bfab2e5e< 7bff0156d13f0ad9436e5178b979b063d59f572a affected
6639b6c2367f884ca172b78d69f7da17bfab2e5e< e6f103a22b08daf5df2f4aa158081840e5910963 affected
6639b6c2367f884ca172b78d69f7da17bfab2e5e< dc1a5dd80af1ee1f29d8375b12dd7625f6294dad affected
6639b6c2367f884ca172b78d69f7da17bfab2e5e< 930e69757b74c3ae083b0c3c7419bfe7f0edc7b2 affected
2.6.13 affected
… +8 more rows
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I. Basic Information for CVE-2026-23089

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() When snd_usb_create_mixer() fails, snd_usb_mixer_free() frees mixer->id_elems but the controls already added to the card still reference the freed memory. Later when snd_card_register() runs, the OSS mixer layer calls their callbacks and hits a use-after-free read. Call trace: get_ctl_value+0x63f/0x820 sound/usb/mixer.c:411 get_min_max_with_quirks.isra.0+0x240/0x1f40 sound/usb/mixer.c:1241 mixer_ctl_feature_info+0x26b/0x490 sound/usb/mixer.c:1381 snd_mixer_oss_build_test+0x174/0x3a0 sound/core/oss/mixer_oss.c:887 ... snd_card_register+0x4ed/0x6d0 sound/core/init.c:923 usb_audio_probe+0x5ef/0x2a90 sound/usb/card.c:1025 Fix by calling snd_ctl_remove() for all mixer controls before freeing id_elems. We save the next pointer first because snd_ctl_remove() frees the current element.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于释放后重用，可能导致系统崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 6639b6c2367f884ca172b78d69f7da17bfab2e5e ~ 51b1aa6fe7dc87356ba58df06afb9677c9b841ea -
Linux Linux 2.6.13 -

II. Public POCs for CVE-2026-23089

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III. Intelligence Information for CVE-2026-23089

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Same Patch Batch · Linux · 2026-02-04 · 79 CVEs total

CVE-2026-23098 8.8 HIGH netrom: fix double-free in nr_route_frame()
CVE-2026-23066 7.8 HIGH rxrpc: Fix recvmsg() unconditional requeue
CVE-2026-23074 7.8 HIGH net/sched: Enforce that teql can only be used as root qdisc
CVE-2026-23077 7.8 HIGH mm/vma: fix anon_vma UAF on mremap() faulted, unfaulted merge
CVE-2026-23105 7.8 HIGH net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag
CVE-2026-23103 7.8 HIGH ipvlan: Make the addrs_lock be per port
CVE-2026-23095 7.5 HIGH gue: Fix skb memleak with inner IP protocol 0.
CVE-2025-71192 7.0 HIGH ALSA: ac97: fix a double free in snd_ac97_controller_register()
CVE-2026-23065 platform/x86/amd: Fix memory leak in wbrf_record()
CVE-2026-23064 net/sched: act_ife: avoid possible NULL deref
CVE-2026-23067 iommu/io-pgtable-arm: fix size_t signedness bug in unmap path
CVE-2026-23059 scsi: qla2xxx: Sanitize payload size to prevent member overflow
CVE-2026-23042 idpf: fix aux device unplugging when rdma is not supported by vport
CVE-2026-23058 can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak
CVE-2026-23057 vsock/virtio: Coalesce only linear skb
CVE-2026-23056 uacce: implement mremap in uacce_vm_ops to return -EPERM
CVE-2025-71199 iio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver
CVE-2025-71198 iio: imu: st_lsm6dsx: fix iio_chan_spec for sensors without event detection
CVE-2025-71197 w1: therm: Fix off-by-one buffer overflow in alarms_store
CVE-2026-23060 crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec

Showing top 20 of 79 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23089

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