Answer in brief
CVE-2026-23089 records a Unknown severity vulnerability in ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6639b6c2367f884ca172b78d69f7da17bfab2e5e <51b1aa6fe7dc87356ba58df06afb9677c9b841ea || >=6639b6c2367f884ca172b78d69f7da17bfab2e5e <56fb6efd5d04caf6f14994d51ec85393b9a896c6 || >=6639b6c2367f884ca172b78d69f7da17bfab2e5e <7009daeefa945973a530b2f605fe445fc03747af || >=6639b6c2367f884ca172b78d69f7da17bfab2e5e <7bff0156d13f0ad9436e5178b979b063d59f572a || >=6639b6c2367f884ca172b78d69f7da17bfab2e5e <e6f103a22b08daf5df2f4aa158081840e5910963 || >=6639b6c2367f884ca172b78d69f7da17bfab2e5e <dc1a5dd80af1ee1f29d8375b12dd7625f6294dad || >=6639b6c2367f884ca172b78d69f7da17bfab2e5e <930e69757b74c3ae083b0c3c7419bfe7f0edc7b2 | 51b1aa6fe7dc87356ba58df06afb9677c9b841ea, 56fb6efd5d04caf6f14994d51ec85393b9a896c6, 7009daeefa945973a530b2f605fe445fc03747af, 7bff0156d13f0ad9436e5178b979b063d59f572a, e6f103a22b08daf5df2f4aa158081840e5910963, dc1a5dd80af1ee1f29d8375b12dd7625f6294dad, 930e69757b74c3ae083b0c3c7419bfe7f0edc7b2 |
| Linux/Linuxgeneric | 2.6.13 | Not reported |
Published upstream
Feb 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.