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Tracker / CVE-2026-23089

CVE-2026-23089

Alta 7.8

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.

Prodotti e versioni affette

linux linux_kernel
linux linux_kernel · 2.6.13 → 5.10.249
linux linux_kernel · 5.11 → 5.15.199
linux linux_kernel · 5.16 → 6.1.162
linux linux_kernel · 6.13 → 6.18.8
linux linux_kernel · 6.2 → 6.6.122
linux linux_kernel · 6.7 → 6.12.68

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