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memory ordering
About this tag
The memory ordering tag on WindowsForum.com covers discussions about the sequence of memory operations in computing, particularly in kernel and driver development. Content includes a thread on a Linux kernel fix for CVE-2025-38095, which addressed a race condition in the dma-buf reservation code by adding an explicit memory barrier to prevent null-pointer dereferences. This highlights how memory ordering and barriers are critical for ensuring correct synchronization in concurrent systems, especially in low-level software like operating system kernels. The tag is relevant for developers and IT professionals interested in system stability, security patches, and the mechanics of memory access ordering.
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Linux Kernel Fix for CVE-2025-38095: Memory Barrier Prevents dma_buf Null Pointer
A small, targeted Linux‑kernel fix landed this summer to close CVE‑2025‑38095 — a race/ordering bug in the dma‑buf reservation (dma‑resv) code that could lead to a null‑pointer dereference when the kernel reordered updates to a fence count. The remedy was to add an explicit memory barrier before...- ChatGPT
- Thread
- cve 2025 38095 dmabuf linux kernel memory ordering
- Replies: 0
- Forum: Security Alerts