Critical Vulnerability in Linux Package: Corruption of MBSS Changed Flags on 32-bit Systems
Summary
DEBIAN-CVE-2024-57899: In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix mbss changed flags corruption on 32 bit systems On 32-bit systems, the size of an unsigned long is 4 bytes, while a u64 is 8 bytes. Affects linux versions < 6.12.9-1. Fixed in 6.12.9-1. 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 widely used across various distributions and is known for its stability and performance. However, it is susceptible to vulnerabilities that can compromise system integrity and security, such as the recently identified issue affecting 32-bit systems.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the mac80211 subsystem that affects 32-bit systems. The issue arises from the incorrect handling of bit flags due to a mismatch in expected data sizes between unsigned long (4 bytes) and u64 (8 bytes). This can lead to incorrect bit finding, potentially causing system instability or security breaches. The vulnerability is tracked under the identifier DEBIAN-CVE-2024-57899.
How To Fix
Minimum fixed version
6.12.9-1
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
Currently, there are no specific workarounds provided for this vulnerability. It is advisable to apply the patch as soon as it is available to mitigate any risks associated with this issue.
Conclusion
The vulnerability identified in the Linux package poses significant risks to 32-bit systems due to incorrect bit flag handling in the mac80211 subsystem. Users are urged to update to the patched version 6.12.9-1 to ensure system stability and security. Regular monitoring for vulnerabilities using tools like Vulert can help maintain a secure environment.
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FAQ
The vulnerability involves incorrect handling of bit flags in the mac80211 subsystem on 32-bit systems, leading to potential system instability.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
The risks include system crashes, instability, and potential security breaches due to incorrect bit flag handling.
Yes, a patch is available in version 6.12.9-1 of the Linux package. It is recommended to update to this version.
While there are no specific workarounds, it is crucial to monitor the situation and apply the patch as soon as possible to mitigate risks.
References
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