CVE-2022-48821

In CVE-2022-48821, the Linux kernel misc/fastrpc path fixes a use-after-free: if FASTRPC_IOCTL_ALLOC_DMA_BUFF copy-back to userland fails, the code previously called dma_buf_put() on a buffer no longer owned, risking a stale fd entry. The remediation avoids dma_buf_put() in that failure path and ...