CVE-2026-53291 Details
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/conexant: Fix missing error check for jack detection In cx_probe(), the return value of snd_hda_jack_detect_enable_callback() is ignored. This function returns a pointer, and if it fails (e.g., due to memory allocation failure), it returns an error pointer which must be checked using IS_ERR(). If the registration fails, the driver continues to probe, but the jack detection callback will not be registered. This can lead to a kernel crash later when the driver attempts to handle jack events or accesses the uninitialized structure. Check the return value using IS_ERR() and propagate the error via PTR_ERR() to the probe caller.
A vulnerability exists in the Linux kernel's handling of jack detection for Conexant audio codecs. The issue arises because the function 'snd_hda_jack_detect_enable_callback()' is called without checking its return value. This function can fail, particularly due to memory allocation issues, and return an error pointer that must be validated. If the jack detection callback registration fails, the driver may proceed with an uninitialized structure, leading to a kernel crash when jack events are processed. This vulnerability affects several versions of the Linux kernel.
The vulnerability has been addressed by modifying the 'cx_probe()' function to include error checks for the jack detection callback. Users should update to the latest version of the Linux kernel where this fix has been applied.
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/1da5c73f3793b224696617a2a21def7500ba18d6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/49c2c5924552e1d2f8b635dee663abebbb7cf63b | kernel.org | Patch |
| https://git.kernel.org/stable/c/a2a33e87a2ffce3046c574d24eec4390c27c9365 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b0e2333a231107adedd38c6fcfe1adc6162716fc | kernel.org | Patch |
| https://git.kernel.org/stable/c/d68f753d89f4ef6e410d7e8b7e8ab2fdde921b80 | kernel.org | Patch |
| https://git.kernel.org/stable/c/dd110cc00cf854a8ecd8d003127a4178c28574ea | kernel.org | Patch |
| https://git.kernel.org/stable/c/f837c7b85143a7c54140ff41ad5c076b73cd9933 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15.149, < 5.15.209 >= 6.1.77, < 6.1.175 >= 6.6.16, < 6.6.141 >= 6.7.4, < 6.12.91 >= 6.13, < 6.18.33 >= 6.19, < 7.0.10 7.1 rc1 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 8, 2026 | Initial Analysis | [email protected] |
| Jun 26, 2026 | New CVE Received | kernel.org |