CVE - CVE-2023-52864

CVE-ID
CVE-2023-52864	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e URL:https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e MISC:https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e URL:https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e MISC:https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203 URL:https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203 MISC:https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6 URL:https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6 MISC:https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453 URL:https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453 MISC:https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097 URL:https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097 MISC:https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6 URL:https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6 MISC:https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3 URL:https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3
Assigning CNA
kernel.org
Date Record Created
20240521	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240521)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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