Aggregation ID Mask Vulnerability in Linux Package: Potential Kernel Oops on P7 Chips
Summary
DEBIAN-CVE-2024-56656: In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix aggregation ID mask to prevent oops on 5760X chips The 5760X (P7) chip's HW GRO/LRO interface is very similar to that of the previous gener... Affects linux versions < 6.12.6-1. Fixed in 6.12.6-1. How to fix ↓
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Background
The Linux package is a core component of the Debian operating system, providing essential functionalities for managing hardware and system resources. It serves as the foundation for various applications and services, ensuring efficient operation and communication between software and hardware. This vulnerability specifically affects the bnxt_en driver, which is responsible for handling network interfaces on certain hardware, particularly the 5760X chip.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the bnxt_en driver related to the aggregation ID mask for the 5760X chip. The aggregation ID fields in the completion structures for this chip have been redefined from 16 bits to 12 bits, which was not reflected in the driver's implementation. This oversight can lead to incorrect handling of packet headers, potentially causing a kernel oops due to invalid opcode errors. The issue arises when the driver attempts to store or fetch packet headers in the wrong TPA buffer, resulting in crashes and instability in the system.
How To Fix
Minimum fixed version
6.12.6-1
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. The best course of action is to apply the patch as soon as it is available.
Conclusion
The aggregation ID mask vulnerability in the Linux package poses a significant risk to systems utilizing the 5760X chip. It is crucial for users to update their systems to the patched version to mitigate potential crashes and ensure stability. Regular monitoring and prompt application of updates are essential for maintaining system security.
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FAQ
The vulnerability can lead to kernel crashes and system instability, particularly affecting systems using the 5760X chip.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
While there are no specific workarounds, it is advisable to monitor your system for unusual behavior and apply the patch as soon as possible.
Yes, this vulnerability specifically affects the bnxt_en driver on systems using the 5760X chip.
Detailed information can be found in the Debian CVE database at https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-56656.json.
References
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