CVE-2023-53071 Details
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: do not run mt76_unregister_device() on unregistered hw Trying to probe a mt7921e pci card without firmware results in a successful probe where ieee80211_register_hw hasn't been called. When removing the driver, ieee802111_unregister_hw is called unconditionally leading to a kernel NULL pointer dereference. Fix the issue running mt76_unregister_device routine just for registered hw.
A vulnerability in the Linux kernel's mt76 Wi-Fi driver can lead to a NULL pointer dereference. This issue occurs when probing an mt7921e PCI card without the necessary firmware, resulting in a successful probe before the hardware is properly registered. When the driver is removed, the unregistration process is executed unconditionally, causing a kernel crash due to the NULL pointer dereference. The vulnerability has been addressed by modifying the driver to only run the unregistration routine for hardware that has been successfully registered.
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/2d34f27714c97a9786a30b3bb54944d6d8ed612f | kernel.org | Patch |
| https://git.kernel.org/stable/c/41130c32f3a18fcc930316da17f3a5f3bc326aa1 | kernel.org | Patch |
| https://git.kernel.org/stable/c/dffe86df26aee01a5fc56a175b7a7f157961e370 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.18, < 6.1.113 >= 6.2, < 6.2.9 6.3 rc1 6.3 rc2 6.3 rc3 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Nov 12, 2025 | Initial Analysis | [email protected] |
| May 2, 2025 | New CVE Received | kernel.org |