Resource Leak Affecting perf package, versions <0:4.18.0-477.74.1.el8_8
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Test your applications- Snyk ID SNYK-RHEL8-PERF-8085010
- published 24 Sep 2024
- disclosed 21 May 2024
Introduced: 21 May 2024
CVE-2023-52864 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-477.74.1.el8_8 or higher.
This issue was patched in RHSA-2024:6993.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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
- https://access.redhat.com/security/cve/CVE-2023-52864
- 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