Critical Vulnerability in Linux Kernel: Media Stream Handling Flaw
Summary
DEBIAN-CVE-2025-22028: In the Linux kernel, the following vulnerability has been resolved: media: vimc: skip .s_stream() for stopped entities Syzbot reported [1] a warning prompted by a check in call_s_stream() that checks whether .s_stream()... Affects linux versions < 6.12.25-1. Fixed in 6.12.25-1. How to fix ↓
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Background
The Linux kernel is the core component of the Linux operating system, responsible for managing hardware and system resources. It provides essential services for all other parts of the operating system and is widely used across various devices, from servers to embedded systems. The kernel's media subsystem facilitates video and audio processing, making it crucial for applications that rely on multimedia functionality. However, a recent vulnerability has been identified in the media handling code, specifically related to the vimc (Virtual Media Controller) driver, which could lead to improper stream management.
Vulnerability Detail
In the Linux kernel, a vulnerability has been discovered in the media subsystem, particularly in the vimc driver. The issue arises when the .s_stream() operation is called for media entities that have not been properly started or are in a stopped state. This flaw can lead to unexpected behavior and potential system instability. The vulnerability was reported by Syzbot and is associated with a warning triggered during the call_s_stream() function. The root cause is a failure to check the state of media entities before invoking stream operations, which could result in crashes or undefined behavior.
How To Fix
Minimum fixed version
6.12.25-1
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. However, users are advised to avoid using the affected media functionalities until the kernel is updated to the patched version.
Conclusion
The identified vulnerability in the Linux kernel's media subsystem poses significant risks related to improper stream handling. Users are strongly encouraged to update their systems to the latest patched version to mitigate these risks. Utilizing tools like Vulert can further enhance security by providing real-time monitoring of open-source vulnerabilities.
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FAQ
The vulnerability involves improper handling of media stream operations in the Linux kernel, specifically affecting the vimc driver.
You can use Vulert, which monitors open-source vulnerabilities in your software. By uploading your manifest file, you can check for vulnerabilities without needing to install any software.
Exploiting this vulnerability could lead to system crashes or undefined behavior when handling media streams, potentially compromising system stability.
Yes, the vulnerability has been patched in version 6.12.25-1 of the Linux kernel for both Debian 13 and 14.
You can use Vulert to receive real-time alerts for open-source vulnerabilities in your software, ensuring you are always informed about potential risks.
References
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