CVE-2026-23089— ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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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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
II. Public POCs for CVE-2026-23089
| # | POC Description | Source Link | Shenlong Link |
|---|
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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 → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-68081
KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to - CVE-2026-68082
libceph: fix two unsafe bare decodes in decode_lockers() - CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ
Same vendor: Linux
- CVE-2026-68081
KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to - CVE-2026-68082
libceph: fix two unsafe bare decodes in decode_lockers() - CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ
V. Comments for CVE-2026-23089
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