CVE-2026-68450

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the btrfs component where the add reloc root() function allocates a mapping node before attempting to insert it into the rc->reloc root tree. If the rb simple insert() function identifies an existing entry, it returns the existing node and leaves the newly allocated node unlinked. The system then returns an -EEXIST error without freeing the new node. Because the node was not inserted into the reloc root tree, the subsequent cleanup process in put reloc control() cannot locate or release it, leading to a memory leak.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.