Critical Buffer Management Flaw in Linux Package Leading to List Corruption
Summary
DEBIAN-CVE-2025-38619: In the Linux kernel, the following vulnerability has been resolved: media: ti: j721e-csi2rx: fix list_del corruption If ti_csi2rx_start_dma() fails in ti_csi2rx_dma_callback(), the buffer is marked done with VB2_BUF_STAT... Affects linux versions < 6.12.43-1. Fixed in 6.12.43-1. 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 is widely used across various distributions and is known for its stability and performance. However, vulnerabilities in the Linux kernel can lead to severe system instability and security risks, making it crucial for users to stay updated with the latest patches.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the media subsystem related to the ti_csi2rx driver. When the function ti_csi2rx_start_dma() fails during the ti_csi2rx_dma_callback(), the buffer is incorrectly marked as done with VB2_BUF_STATE_ERROR but is not removed from the DMA queue. This oversight can lead to a double list_del() operation, resulting in list corruption and potential system crashes. The specific error manifests as a kernel panic, indicating a fatal exception in the interrupt handling, which can disrupt system operations and compromise stability.
How To Fix
Minimum fixed version
6.12.43-1
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 mentioned for this vulnerability. The best course of action is to apply the available patches as soon as possible.
Conclusion
The identified vulnerability in the Linux kernel poses significant risks to system stability and security. Users are strongly advised to update their packages to the latest patched versions to mitigate these risks. Regular monitoring and updates are essential for maintaining a secure operating environment.
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FAQ
The vulnerability involves improper buffer management in the ti_csi2rx driver, leading to potential list corruption and system crashes.
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Failure to address this vulnerability may result in system instability, crashes, and potential data loss due to kernel panics.
Yes, the kernel panic caused by this vulnerability can lead to unexpected system behavior, which may result in data loss.
It is recommended to regularly check for updates and apply patches promptly to ensure system security and stability.
References
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