PT-2024-5405 · Linux+5 · Linux Kernel+5
Published
2024-05-02
·
Updated
2025-09-29
·
CVE-2024-38664
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.6.37
Description
The vulnerability is related to the
drm: zynqmp dpsub module in the Linux kernel. It is caused by the zynqmp dp hpd work func function calling drm bridge hpd notify, which expects hpd mutex to be initialized. To fix this, the DRM bridge must always be registered before zynqmp dpsub drm init is called, as it calls drm bridge attach. This resolves a lockdep warning.The issue is related to a synchronization problem, where the
hpd mutex is not properly initialized before being used. This can lead to a lockdep warning and potentially cause other issues.The vulnerability can be exploited by an attacker to affect the confidentiality, integrity, and availability of protected information.
Recommendations
To resolve this issue, update the Linux kernel to version 6.6.37 or later. This version includes the fix for the
drm: zynqmp dpsub module, ensuring that the DRM bridge is always registered before zynqmp dpsub drm init is called.Exploit
Fix
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu