CVE-2023-53666 Details
Description
In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd938x: fix missing mbhc init error handling MBHC initialisation can fail so add the missing error handling to avoid dereferencing an error pointer when later configuring the jack: Unable to handle kernel paging request at virtual address fffffffffffffff8 pc : wcd_mbhc_start+0x28/0x380 [snd_soc_wcd_mbhc] lr : wcd938x_codec_set_jack+0x28/0x48 [snd_soc_wcd938x] Call trace: wcd_mbhc_start+0x28/0x380 [snd_soc_wcd_mbhc] wcd938x_codec_set_jack+0x28/0x48 [snd_soc_wcd938x] snd_soc_component_set_jack+0x28/0x8c [snd_soc_core] qcom_snd_wcd_jack_setup+0x7c/0x19c [snd_soc_qcom_common] sc8280xp_snd_init+0x20/0x2c [snd_soc_sc8280xp] snd_soc_link_init+0x28/0x90 [snd_soc_core] snd_soc_bind_card+0x628/0xbfc [snd_soc_core] snd_soc_register_card+0xec/0x104 [snd_soc_core] devm_snd_soc_register_card+0x4c/0xa4 [snd_soc_core] sc8280xp_platform_probe+0xf0/0x108 [snd_soc_sc8280xp]
A vulnerability exists in the Linux kernel's handling of Multi Button Headset Control (MBHC) initialization for WCD938X codecs. The issue arises because the MBHC initialization process can fail, and the current implementation lacks proper error handling. This oversight can lead to a null pointer dereference when the system attempts to configure the headphone jack, causing a kernel paging request error. The vulnerability has been addressed by adding the necessary error handling to prevent dereferencing an error pointer.
Users can upgrade to the latest Linux kernel version where this vulnerability has been fixed. The error handling has been added in the WCD938X codec implementation, preventing the null pointer dereference.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/31ee704c84c4bf4df8521ef1478c161f710d0f94 | kernel.org | Patch |
| https://git.kernel.org/stable/c/5a34d252052b5da743ef82591c860fc947384d4e | kernel.org | Patch |
| https://git.kernel.org/stable/c/7dfae2631bfbdebecd35fe7b472ab3cc95c9ed66 | kernel.org | Patch |
| https://git.kernel.org/stable/c/bb241ae928c694e365c30c888c9eb02dcc812dfd | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15, < 5.15.123 >= 5.16, < 6.1.42 >= 6.2, < 6.4.7 6.5 rc1 6.5 rc2 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Feb 26, 2026 | Reanalysis | [email protected] |
| Feb 3, 2026 | Initial Analysis | [email protected] |
| Oct 7, 2025 | New CVE Received | kernel.org |