CVE-2025-40172 accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages()

In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Treat remaining == 0 as error in findandmapuserpages Currently, if findandmapuserpages takes a DMA xfer request from the user with a length field set to 0, or in a rare case, the host receives QAICTRANSDMAXFERCONT fro...

CVE-2025-40172

The connected Astra Linux entry for CVE-2025-40172 provides concrete technical details: a Linux kernel vulnerability in accel/qaic where find_and_map_user_pages() may return 0 when a zero-length DMA request is made, or when a QAIC_TRANS_DMA_XFER_CONT occurs after bytes are transferred, causing en...