Memory Allocation Vulnerability in Linux Kernel Affecting System Stability

CVE-2025-21709

Summary

A memory allocation vulnerability in the Linux Kernel can lead to system instability when dup_mmap() fails. This issue may leave the maple tree in an unsafe state, allowing access to an incomplete mm_struct. The vulnerability can potentially lead to undefined behavior during memory management operations. Although recent patches have addressed some related issues, care must still be taken during the handling of memory structures to prevent race conditions and instability in the operating environment.

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