Critical Null Pointer Dereference Vulnerability in Linux Kernel: linux Package Affected
Summary
DEBIAN-CVE-2024-53201: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix null check for pipe_ctx->plane_state in dcn20_program_pipe This commit addresses a null pointer dereference issue in dcn20_program_... Affects linux versions < 6.12.3-1. Fixed in 6.12.3-1. How to fix ↓
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Background
The linux package is a core component of the Debian operating system, providing the essential kernel that manages system resources and hardware interactions. It is responsible for enabling the operating system to communicate with hardware devices, manage memory, and execute processes. Due to its fundamental role, vulnerabilities in the linux package can have widespread implications for system stability and security.
Vulnerability Detail
In the Linux kernel, a null pointer dereference vulnerability was identified in the drm/amd/display module, specifically within the dcn20_program_pipe function. This issue arises when the pipe_ctx->plane_state attribute is accessed without proper null checks, potentially leading to system crashes or unpredictable behavior. The vulnerability was partially addressed in a previous commit, but further checks were necessary to ensure complete stability. The lack of these checks can allow attackers to exploit the vulnerability, resulting in denial of service or other malicious activities.
How To Fix
Minimum fixed version
6.12.3-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can avoid using the affected functionalities of the drm/amd/display module until the package is updated. However, this is not a permanent solution and updating the package is strongly recommended.
Conclusion
The identified null pointer dereference vulnerability in the Linux kernel's drm/amd/display module poses significant risks to system stability and security. Users are encouraged to update their linux package to version 6.12.3-1 or later to mitigate these risks. Regular monitoring for vulnerabilities is essential to maintain a secure environment.
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FAQ
A null pointer dereference vulnerability occurs when a program attempts to access memory that has not been allocated, leading to potential crashes or exploitation.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The risks include system crashes, denial of service, and potential exploitation by attackers to execute arbitrary code.
Yes, you can temporarily avoid using the affected functionalities of the drm/amd/display module until the package is updated.
It is advisable to regularly check for vulnerabilities, ideally as part of a routine security audit, to ensure your system remains secure.
References
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