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CVE-2023-52864 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: platform/x86: wmi: Fix opening of char device Since commit fa1f68db6ca7 ("drivers: misc: pass miscdevice pointer via file private data"), the miscdevice stores a pointer to itself inside filp->private_data, which means that private_data will not be NULL when wmi_char_open() is called. This might cause memory corruption should wmi_char_open() be unable to find its driver, something which can happen when the associated WMI device is deleted in wmi_free_devices(). Fix the problem by using the miscdevice pointer to retrieve the WMI device data associated with a char device using container_of(). This also avoids wmi_char_open() picking a wrong WMI device bound to a driver with the same name as the original driver.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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Hyperlink Resource
https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e
https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e
https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203
https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6
https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453
https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097
https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6
https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-52864
NVD Published Date:
05/21/2024
NVD Last Modified:
05/21/2024
Source:
kernel.org