Live › vulnerability › CVE-2026-98492
Go to dashboardIn the Linux kernel's Cadence MACB Ethernet driver, error paths in macb_alloc() fail to free DMA-coherent buffers, so memory is leaked when Tx or Rx buffer allocation fails or crosses a 4G boundary. The sources describe a resource leak, not code execution or data exposure.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Systems running a Linux kernel with the Cadence MACB/GEM Ethernet driver, typically certain ARM or embedded boards. The leak only happens when buffer allocation fails or crosses a 4G boundary, so most machines with normal memory conditions are unlikely to hit it. unknown
No product ranges from the sources yet.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
In the Linux kernel, the following vulnerability has been resolved:
net: macb: fix dma_alloc_coherent() leak on macb_alloc() error paths
Fix 3 leaks in macb_alloc() error paths:
This is because our error handling calls macb_free(bp) which in turn frees the buffers stored in bp->queues[0], but nothing has been stored in there. Fix by storing allocated buffers into bp->queues[0] ASAP.
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