{"apiVersion":"1.0","identifier":"CVE-2026-68450","description":"In the Linux kernel, the following vulnerability has been resolved: btrfs: free mapping node on duplicate reloc root insert __add_reloc_root() allocates a mapping_node before inserting it into rc->reloc_root_tree. If rb_simple_insert() finds an existing entry, it returns the existing rb_node and leaves the newly allocated node unlinked. The error path then returns -EEXIST without freeing the new node. Since the node was never inserted into reloc_root_tree, the later cleanup in put_reloc_control() cannot find it either. Free the newly allocated node before returning -EEXIST. The callers currently assert that -EEXIST should not happen, so this is a defensive cleanup for an unexpected duplicate insert path. If the path is ever reached, the local allocation should still be released.","publishedAt":"2026-08-12T01:17:07","lastModifiedAt":"2026-08-19T17:20:50","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-68450","cvssScore":null,"cvssVector":"Pending","epssProbability":0.00161,"riskScore":0,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-68450","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-68450","en":"https://www.redsauce.net/en/cves/CVE-2026-68450","fr":"https://www.redsauce.net/fr/cves/CVE-2026-68450","pt":"https://www.redsauce.net/pt/cves/CVE-2026-68450","de":"https://www.redsauce.net/de/cves/CVE-2026-68450","sk":"https://www.redsauce.net/sk/cves/CVE-2026-68450","el":"https://www.redsauce.net/el/cves/CVE-2026-68450"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-68450"}}