Oracle Linux: CVE-2019-17075: ELSA-2020-5845: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

An issue was discovered in write_tpt_entry in drivers/infiniband/hw/cxgb4/mem.c in the Linux kernel through 5.3.2. The cxgb4 driver is directly calling dma_map_single (a DMA function) from a stack variable. This could allow an attacker to trigger a Denial of Service, exploitable if this driver is used on an architecture for which this stack/DMA interaction has security relevance.
A denial of service (DoS) was found in the write_tpt_entry in drivers/infiniband/hw/cxgb4/mem.c in the cxgb4' Chelsio T4/T5 RDMA Driver. Some of the architectures performing the DMA operation directly from the stack variable (instead of the heap) allows an attacker in the network to cause some security threat.