CVE-2026-31587

ASoC: qcom: q6apm: move component registration to unmanaged version

High · published April 24, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
6.2
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

ASoC: qcom: q6apm: move component registration to unmanaged version

q6apm component registers dais dynamically from ASoC toplology, which

are allocated using device managed version apis. Allocating both

component and dynamic dais using managed version could lead to incorrect

free ordering, dai will be freed while component still holding references

to it.

Fix this issue by moving component to unmanged version so

that the dai pointers are only freeded after the component is removed.

==================================================================

BUG: KASAN: slab-use-after-free in snd_soc_del_component_unlocked+0x3d4/0x400 [snd_soc_core]

Read of size 8 at addr ffff00084493a6e8 by task kworker/u48:0/3426

Tainted: [W]=WARN

Hardware name: LENOVO 21N2ZC5PUS/21N2ZC5PUS, BIOS N42ET57W (1.31 ) 08/08/2024

Workqueue: pdr_notifier_wq pdr_notifier_work [pdr_interface]

Call trace:

show_stack+0x28/0x7c (C)

dump_stack_lvl+0x60/0x80

print_report+0x160/0x4b4

kasan_report+0xac/0xfc

__asan_report_load8_noabort+0x20/0x34

snd_soc_del_component_unlocked+0x3d4/0x400 [snd_soc_core]

snd_soc_unregister_component_by_driver+0x50/0x88 [snd_soc_core]

devm_component_release+0x30/0x5c [snd_soc_core]

devres_release_all+0x13c/0x210

device_unbind_cleanup+0x20/0x190

device_release_driver_internal+0x350/0x468

device_release_driver+0x18/0x30

bus_remove_device+0x1a0/0x35c

device_del+0x314/0x7f0

device_unregister+0x20/0xbc

apr_remove_device+0x5c/0x7c [apr]

device_for_each_child+0xd8/0x160

apr_pd_status+0x7c/0xa8 [apr]

pdr_notifier_work+0x114/0x240 [pdr_interface]

process_one_work+0x500/0xb70

worker_thread+0x630/0xfb0

kthread+0x370/0x6c0

ret_from_fork+0x10/0x20

Allocated by task 77:

kasan_save_stack+0x40/0x68

kasan_save_track+0x20/0x40

kasan_save_alloc_info+0x44/0x58

__kasan_kmalloc+0xbc/0xdc

__kmalloc_node_track_caller_noprof+0x1f4/0x620

devm_kmalloc+0x7c/0x1c8

snd_soc_register_dai+0x50/0x4f0 [snd_soc_core]

soc_tplg_pcm_elems_load+0x55c/0x1eb8 [snd_soc_core]

snd_soc_tplg_component_load+0x4f8/0xb60 [snd_soc_core]

audioreach_tplg_init+0x124/0x1fc [snd_q6apm]

q6apm_audio_probe+0x10/0x1c [snd_q6apm]

snd_soc_component_probe+0x5c/0x118 [snd_soc_core]

soc_probe_component+0x44c/0xaf0 [snd_soc_core]

snd_soc_bind_card+0xad0/0x2370 [snd_soc_core]

snd_soc_register_card+0x3b0/0x4c0 [snd_soc_core]

devm_snd_soc_register_card+0x50/0xc8 [snd_soc_core]

x1e80100_platform_probe+0x208/0x368 [snd_soc_x1e80100]

platform_probe+0xc0/0x188

really_probe+0x188/0x804

__driver_probe_device+0x158/0x358

driver_probe_device+0x60/0x190

__device_attach_driver+0x16c/0x2a8

bus_for_each_drv+0x100/0x194

__device_attach+0x174/0x380

device_initial_probe+0x14/0x20

bus_probe_device+0x124/0x154

deferred_probe_work_func+0x140/0x220

process_one_work+0x500/0xb70

worker_thread+0x630/0xfb0

kthread+0x370/0x6c0

ret_from_fork+0x10/0x20

Freed by task 3426:

kasan_save_stack+0x40/0x68

kasan_save_track+0x20/0x40

__kasan_save_free_info+0x4c/0x80

__kasan_slab_free+0x78/0xa0

kfree+0x100/0x4a4

devres_release_all+0x144/0x210

device_unbind_cleanup+0x20/0x190

device_release_driver_internal+0x350/0x468

device_release_driver+0x18/0x30

bus_remove_device+0x1a0/0x35c

device_del+0x314/0x7f0

device_unregister+0x20/0xbc

apr_remove_device+0x5c/0x7c [apr]

device_for_each_child+0xd8/0x160

apr_pd_status+0x7c/0xa8 [apr]

pdr_notifier_work+0x114/0x240 [pdr_interface]

process_one_work+0x500/0xb70

worker_thread+0x630/0xfb0

kthread+0x370/0x6c0

ret_from_fork+0x10/0x20

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00171 · 6.2th percentile
Published
2026-04-24T14:42Z
EPSS history
Timeline
  • 24 APR 14:42Z
    ASoC: qcom: q6apm: move component registration to unmanaged version
    cvelistv5