CVE-2026-31730

In the Linux kernel, the following vulnerability has been resolved:

misc: fastrpc: possible double-free of cctx->remote_heap

fastrpcinitcreatestaticprocess() may free cctx->remoteheap on the errmap path but does not clear the pointer. Later, fastrpcrpmsgremove() frees cctx->remoteheap again if it is non-NULL, which can lead to a double-free if the INITCREATESTATIC ioctl hits the error path and the rpmsg device is subsequently removed/unbound. Clear cctx->remoteheap after freeing it in the error path to prevent the later cleanup from freeing it again.

This issue was found by an in-house analysis workflow that extracts AST-based information and runs static checks, with LLM assistance for triage, and was confirmed by manual code review. No hardware testing was performed.