{"id":"CVE-2026-98855","title":"of/overlay: put property on deadprops only after changeset add succeeds","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nof/overlay: put property on deadprops only after changeset add succeeds\n\nadd_changeset_property() links a new property of a not-yet-live\ntarget node into the node's dea…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= f96278810150fc39085d1872e5b39ea06366d03e < d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a","Linux >= f96278810150fc39085d1872e5b39ea06366d03e < 7dc6a769153c0457077a0da4888a00f61e66de15","Linux >= f96278810150fc39085d1872e5b39ea06366d03e < 5857035a3b53a4e7b5a0d5a740189901ece0b079","Linux >= f96278810150fc39085d1872e5b39ea06366d03e < 814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c","Linux b52ca352489be8beb7de3a8181509a0deaf72e21","Linux >= 4.19.49 < 4.20","Linux 5.0"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:51:09.970Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98855","references":[{"url":"https://git.kernel.org/stable/c/d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a"},{"url":"https://git.kernel.org/stable/c/7dc6a769153c0457077a0da4888a00f61e66de15"},{"url":"https://git.kernel.org/stable/c/5857035a3b53a4e7b5a0d5a740189901ece0b079"},{"url":"https://git.kernel.org/stable/c/814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T16:47:32.462Z","slug":"CVE-2026-98855","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nof/overlay: put property on deadprops only after changeset add succeeds\n\nadd_changeset_property() links a new property of a not-yet-live\ntarget node into the node's deadprops list before handing it to\nof_changeset_add_property(). If that fails, the error path frees the\nproperty but leaves the freed pointer linked in deadprops, and\nof_node_release() frees it a second time when the aborted overlay's\nnode is released.\n\nRecord the changeset entry first and link the property into deadprops\nonly on success. of_changeset_add_property() never looks at the\nnode's property lists, so the order of the two steps is otherwise\nimmaterial, and the error path frees a property that nothing\nreferences.\n\n## Affected\n\n- `Linux >= f96278810150fc39085d1872e5b39ea06366d03e < d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a`\n- `Linux >= f96278810150fc39085d1872e5b39ea06366d03e < 7dc6a769153c0457077a0da4888a00f61e66de15`\n- `Linux >= f96278810150fc39085d1872e5b39ea06366d03e < 5857035a3b53a4e7b5a0d5a740189901ece0b079`\n- `Linux >= f96278810150fc39085d1872e5b39ea06366d03e < 814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c`\n- `Linux b52ca352489be8beb7de3a8181509a0deaf72e21`\n- `Linux >= 4.19.49 < 4.20`\n- `Linux 5.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}