CVE-2026-43128
MediumSummary
A vulnerability related to double dma_buf_unpin in failure path has been fixed in the Linux kernel. In the function ib_umem_dmabuf_get_pinned_with_dma_device(), a failure may occur during the call to ib_umem_dmabuf_map_pages(), leading to improper memory management.
Risk Assessment
This vulnerability may lead to unexpected system behavior and potential memory leaks, which can affect the stability and security of applications running on the Linux kernel.
Recommendation
It is recommended to update the Linux kernel to the latest version to eliminate this vulnerability and ensure proper memory management.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Fix double dma_buf_unpin in failure path In ib_umem_dmabuf_get_pinned_with_dma_device(), the call to ib_umem_dmabuf_map_pages() can fail. If this occurs, the dmabuf is immediately unpinned but the umem_dmabuf->pinned fl