cbcvebase.
CVE-2026-23089
published 2026-02-04

CVE-2026-23089: 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()…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.14%
3.4th percentile
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

62 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.162-1 (bookworm)linux 6.1.162-1 (bookworm)
debianlinux-6.1< linux 6.1.162-1 (bookworm)linux 6.1.162-1 (bookworm)
linuxlinux
linuxlinux>= 6639b6c2367f884ca172b78d69f7da17bfab2e5e < 51b1aa6fe7dc87356ba58df06afb9677c9b841ea51b1aa6fe7dc87356ba58df06afb9677c9b841ea
linuxlinux>= 6639b6c2367f884ca172b78d69f7da17bfab2e5e < 56fb6efd5d04caf6f14994d51ec85393b9a896c656fb6efd5d04caf6f14994d51ec85393b9a896c6
linuxlinux>= 6639b6c2367f884ca172b78d69f7da17bfab2e5e < 7009daeefa945973a530b2f605fe445fc03747af7009daeefa945973a530b2f605fe445fc03747af
linuxlinux>= 6639b6c2367f884ca172b78d69f7da17bfab2e5e < 7bff0156d13f0ad9436e5178b979b063d59f572a7bff0156d13f0ad9436e5178b979b063d59f572a
linuxlinux>= 6639b6c2367f884ca172b78d69f7da17bfab2e5e < e6f103a22b08daf5df2f4aa158081840e5910963e6f103a22b08daf5df2f4aa158081840e5910963
linuxlinux>= 6639b6c2367f884ca172b78d69f7da17bfab2e5e < dc1a5dd80af1ee1f29d8375b12dd7625f6294daddc1a5dd80af1ee1f29d8375b12dd7625f6294dad
linuxlinux>= 6639b6c2367f884ca172b78d69f7da17bfab2e5e < 930e69757b74c3ae083b0c3c7419bfe7f0edc7b2930e69757b74c3ae083b0c3c7419bfe7f0edc7b2
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.249-15.10.249-1
linuxlinux_kernel>= 0 < 6.1.162-16.1.162-1
linuxlinux_kernel>= 0 < 6.12.69-16.12.69-1
linuxlinux_kernel>= 0 < 6.18.8-16.18.8-1
linuxlinux_kernel>= 2.6.13 < 5.10.2495.10.249
linuxlinux_kernel>= 5.11 < 5.15.1995.15.199
linuxlinux_kernel>= 5.16 < 6.1.1626.1.162
linuxlinux_kernel>= 6.13 < 6.18.86.18.8
linuxlinux_kernel>= 6.2 < 6.6.1226.6.122
linuxlinux_kernel>= 6.7 < 6.12.686.12.68
ubuntulinux
ubuntulinux-aws
ubuntulinux-aws-fips
ubuntulinux-azure

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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