{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"29d9746812d8b7c37d594f484e994fd552c3ec33","status":"affected","version":"57a304cfd43b2b4a5b44b8f5dc026abb34183068","versionType":"git"},{"lessThan":"b7c5b8e1d5f0779dfbabc3068b7ac0f12e53b3a8","status":"affected","version":"57a304cfd43b2b4a5b44b8f5dc026abb34183068","versionType":"git"},{"lessThan":"92bedc0455552b42ada1a1f42b0e3a8593cdfccc","status":"affected","version":"57a304cfd43b2b4a5b44b8f5dc026abb34183068","versionType":"git"},{"lessThan":"14a8be9428435ee17f17fae7991215c246b7fd43","status":"affected","version":"57a304cfd43b2b4a5b44b8f5dc026abb34183068","versionType":"git"},{"lessThan":"797dc567146c7e3c4f8d9680e4fbc76e0a6d9151","status":"affected","version":"57a304cfd43b2b4a5b44b8f5dc026abb34183068","versionType":"git"},{"lessThan":"ae0629ff9ccb836416ada129f4edc7efea6eaaad","status":"affected","version":"57a304cfd43b2b4a5b44b8f5dc026abb34183068","versionType":"git"},{"lessThan":"6a8269b6459ed870a8156c106a0f597383907872","status":"affected","version":"57a304cfd43b2b4a5b44b8f5dc026abb34183068","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"5.13"},{"lessThan":"5.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.216","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-68450","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: free mapping node on duplicate reloc root insert\n\n__add_reloc_root() allocates a mapping_node before inserting it into\nrc->reloc_root_tree.  If rb_simple_insert() finds an existing entry, it\nreturns the existing rb_node and leaves the newly allocated node unlinked.\n\nThe error path then returns -EEXIST without freeing the new node.  Since\nthe node was never inserted into reloc_root_tree, the later cleanup in\nput_reloc_control() cannot find it either.\n\nFree the newly allocated node before returning -EEXIST.\n\nThe callers currently assert that -EEXIST should not happen, so this is a\ndefensive cleanup for an unexpected duplicate insert path.  If the path is\never reached, the local allocation should still be released.","epss":{"date":"2026-11-06","percentile":0.05356,"score":0.00161},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793985573707,"publishedAt":1786495908970,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/29d9746812d8b7c37d594f484e994fd552c3ec33"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/b7c5b8e1d5f0779dfbabc3068b7ac0f12e53b3a8"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/92bedc0455552b42ada1a1f42b0e3a8593cdfccc"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/14a8be9428435ee17f17fae7991215c246b7fd43"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/797dc567146c7e3c4f8d9680e4fbc76e0a6d9151"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ae0629ff9ccb836416ada129f4edc7efea6eaaad"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/6a8269b6459ed870a8156c106a0f597383907872"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/14a8be9428435ee17f17fae7991215c246b7fd43"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/29d9746812d8b7c37d594f484e994fd552c3ec33"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/6a8269b6459ed870a8156c106a0f597383907872"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/797dc567146c7e3c4f8d9680e4fbc76e0a6d9151"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/92bedc0455552b42ada1a1f42b0e3a8593cdfccc"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/ae0629ff9ccb836416ada129f4edc7efea6eaaad"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/b7c5b8e1d5f0779dfbabc3068b7ac0f12e53b3a8"}],"remediation":[],"revision":"92d26b11ad28c7ea9c181a06d1f7ef1732617c2d5d407d4637d28eda8d7e82bb","sources":[{"modifiedAt":1793984117167,"name":"CNA: Linux","retrievedAt":1793986010660,"url":"https://www.cve.org/CVERecord?id=CVE-2026-68450"},{"modifiedAt":1793985573707,"name":"NVD","retrievedAt":1793989654693,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68450"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793986038562,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-68450"}],"ssvc":{"assessedAt":1793983784195,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"btrfs: free mapping node on duplicate reloc root insert","updatedAt":1793989654693}