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Vulnerability · Published Feb 4, 2026 · Assigned by Linux

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

High 7.8

In plain English

A high-severity use-after-free in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.2%top 94.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.162-1DEBIAN-CVE-2026-23089
Debian:13linux6.12.69-1DEBIAN-CVE-2026-23089
Debian:14linux6.18.8-1DEBIAN-CVE-2026-23089
Ubuntu:22.04:LTSlinux5.15.0-176.186UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux6.8.0-117.117UBUNTU-CVE-2026-23089
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-aws5.15.0-1105.112UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-aws6.8.0-1055.58UBUNTU-CVE-2026-23089
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1057.60~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-azure5.15.0-1110.119UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-azure6.8.0-1056.62UBUNTU-CVE-2026-23089
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1021.21~24.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1059.65~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1114.123UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2026-23089
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-gcp5.15.0-1105.114UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-gcp6.8.0-1058.61UBUNTU-CVE-2026-23089
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1021.24~24.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1060.63~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-gke5.15.0-1101.107UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-gke6.8.0-1054.60UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1088.96UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1041.44UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-41.41~24.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-124.124~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-ibm5.15.0-1099.102UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-ibm6.8.0-1055.56UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1055.56~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1100.106UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-kvm5.15.0-1097.102UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-175.185UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-117.117.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-117.117.1~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1100.101UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1054.57UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1031.31UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1054.57~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1054.57.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1057.57UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1024.24UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1046.46UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1030.30UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-oracle5.15.0-1102.108UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55UBUNTU-CVE-2026-23089
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1019.19~24.04.3UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1054.55~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-raspi5.15.0-1099.102UBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-raspi6.8.0-1056.60UBUNTU-CVE-2026-23089
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-23089
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-23089
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-117.117~22.04.1UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-23089
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1032.33UBUNTU-CVE-2026-23089
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1070.74UBUNTU-CVE-2026-23089

Affected products (as reported)

VendorProductVersions
Linux Linux 6639b6c2367f884ca172b78d69f7da17bfab2e5e – before 51b1aa6fe7dc87356ba58df06afb9677c9b841ea6639b6c2367f884ca172b78d69f7da17bfab2e5e – before 56fb6efd5d04caf6f14994d51ec85393b9a896c66639b6c2367f884ca172b78d69f7da17bfab2e5e – before 7009daeefa945973a530b2f605fe445fc03747af6639b6c2367f884ca172b78d69f7da17bfab2e5e – before 7bff0156d13f0ad9436e5178b979b063d59f572a6639b6c2367f884ca172b78d69f7da17bfab2e5e – before e6f103a22b08daf5df2f4aa158081840e59109636639b6c2367f884ca172b78d69f7da17bfab2e5e – before dc1a5dd80af1ee1f29d8375b12dd7625f6294dad6639b6c2367f884ca172b78d69f7da17bfab2e5e – before 930e69757b74c3ae083b0c3c7419bfe7f0edc7b2
Linux Linux 2.6.13

Weakness: CWE-416

References