CVE-2023-52864

Vulnerability overview

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...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 < cf098e937dd125c0317a0d6f261ac2a950a233d6, >= 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 < 9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203, >= 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 < d426a2955e45a95b2282764105fcfb110a540453, >= 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 < e0bf076b734a2fab92d8fddc2b8b03462eee7097, >= 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 < 44a96796d25809502c75771d40ee693c2e44724e, >= 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 < 36d85fa7ae0d6be651c1a745191fa7ef055db43e, >= 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 < fb7b06b59c6887659c6ed0ecd3110835eecbb6a3, >= 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 < eba9ac7abab91c8f6d351460239108bef5e7a0b6, >= 4.15, >= 4.15 < 4.19.299, >= 4.20 < 5.4.261, >= 5.5 < 5.10.201, >= 5.11 < 5.15.139, >= 5.16 < 6.1.63, >= 6.2 < 6.5.12, >= 6.6 < 6.6.2

Fixed versions

4.19.299, 5.4.261, 5.10.201, 5.15.139, 6.1.63, 6.5.12, 6.6.2

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-787