Critical Memory Management Vulnerability in Linux Kernel: CVE-2025-37834
Summary
DEBIAN-CVE-2025-37834: In the Linux kernel, the following vulnerability has been resolved: mm/vmscan: don't try to reclaim hwpoison folio Syzkaller reports a bug as follows: Injecting memory failure for pfn 0x18b00e at process virtual address... Affects linux versions < 6.12.27-1. Fixed in 6.12.27-1. How to fix ↓
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Background
The Linux kernel is the core component of the Linux operating system, responsible for managing hardware resources and providing essential services to applications. It is known for its stability, performance, and flexibility. However, vulnerabilities can arise due to complex interactions within its memory management system, as seen in CVE-2025-37834, which affects versions prior to 6.12.27-1.
Vulnerability Detail
CVE-2025-37834 is a critical vulnerability in the Linux kernel's memory management subsystem. It originates from improper handling of hardware-poisoned memory pages during the reclamation process. When a dirty swapcache page is isolated and a memory failure is injected, the kernel fails to manage the page correctly, leading to potential system crashes and data corruption. The bug is triggered when the kernel attempts to reclaim memory from a page that has been marked as not up-to-date, causing a kernel panic and impacting system stability.
How To Fix
Minimum fixed version
6.12.27-1
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 recommended to apply the patch as soon as it is available to mitigate risks.
Conclusion
CVE-2025-37834 represents a significant vulnerability in the Linux kernel's memory management system, necessitating prompt attention and remediation. Users are advised to update their systems to the latest patched version to ensure stability and security.
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FAQ
CVE-2025-37834 is a vulnerability in the Linux kernel that affects memory management, leading to potential system crashes.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
Exploitation of this vulnerability can lead to kernel panics, system instability, and data corruption.
Yes, a patch is available in version 6.12.27-1 of the Linux kernel. It is recommended to update to this version.
If immediate updating is not possible, monitor your system closely for any unusual behavior and consider isolating critical systems until a patch can be applied.
References
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