dma memory safety

About this tag
The tag 'dma memory safety' covers discussions about Direct Memory Access (DMA) vulnerabilities that can lead to memory corruption or data exposure. A recent thread on WindowsForum highlights CVE-2026-31649, a Linux kernel flaw in the stmmac Ethernet driver where an integer underflow in jumbo-frame handling can cause DMA to map beyond intended packet data. While this specific issue does not affect Windows directly, it is relevant for users managing mixed environments with Linux-based network appliances, embedded systems, or industrial hardware. The tag focuses on DMA-related memory safety risks, including improper buffer handling, driver bugs, and hardware-level attack surfaces that can compromise system integrity.

  1. CVE-2026-31649: stmmac jumbo-frame integer underflow and DMA risk on embedded Linux

    CVE-2026-31649 is a newly published Linux kernel vulnerability that turns a small arithmetic mistake in the stmmac Ethernet driver into a potentially serious memory-safety problem on embedded and system-on-chip hardware. The flaw sits in the driver’s jumbo-frame transmit path, where a mismatch...
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    • dma memory safety embedded networking linux kernel security stmmac driver
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    • Forum: Security Alerts