{"id":"CVE-2026-98855","state":"PUBLISHED","title":"of/overlay: put property on deadprops only after changeset add succeeds","description":"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 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.","publishedAt":"2026-10-18T15:51:09.970Z","updatedAt":"2026-10-30T12:40:16.306Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"004a0ee2e5315f1245775b369fcb940e8cda3807","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"f6f70b12ae3e4074e4cd3f42cd66fd482ce7a4b5","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"50c3663790c61648a51f197970f660fd543269a7","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"936f1ffcb87a1c50938a21176a6463af162cf4b5","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"7dc6a769153c0457077a0da4888a00f61e66de15","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"5857035a3b53a4e7b5a0d5a740189901ece0b079","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c","versionType":"git"},{"version":"b52ca352489be8beb7de3a8181509a0deaf72e21","status":"affected","versionType":"git"},{"version":"4.19.49","status":"affected","lessThan":"4.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/of/overlay.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.0","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/of/overlay.c"]}],"references":["https://git.kernel.org/stable/c/004a0ee2e5315f1245775b369fcb940e8cda3807","https://git.kernel.org/stable/c/f6f70b12ae3e4074e4cd3f42cd66fd482ce7a4b5","https://git.kernel.org/stable/c/50c3663790c61648a51f197970f660fd543269a7","https://git.kernel.org/stable/c/936f1ffcb87a1c50938a21176a6463af162cf4b5","https://git.kernel.org/stable/c/d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a","https://git.kernel.org/stable/c/7dc6a769153c0457077a0da4888a00f61e66de15","https://git.kernel.org/stable/c/5857035a3b53a4e7b5a0d5a740189901ece0b079","https://git.kernel.org/stable/c/814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c"],"weaknesses":[],"ingestedAt":"2026-10-30T13:00:06.648Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98855.json","commit":"cb14bf1b43b0c9f05f7f40eae2246263fd430780","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98855","state":"PUBLISHED","datePublished":"2026-10-18T15:51:09.970Z","dateUpdated":"2026-10-30T12:40:16.306Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.376Z"},"containers":{"cna":{"title":"of/overlay: put property on deadprops only after changeset add succeeds","descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"004a0ee2e5315f1245775b369fcb940e8cda3807","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"f6f70b12ae3e4074e4cd3f42cd66fd482ce7a4b5","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"50c3663790c61648a51f197970f660fd543269a7","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"936f1ffcb87a1c50938a21176a6463af162cf4b5","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"7dc6a769153c0457077a0da4888a00f61e66de15","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"5857035a3b53a4e7b5a0d5a740189901ece0b079","versionType":"git"},{"version":"f96278810150fc39085d1872e5b39ea06366d03e","status":"affected","lessThan":"814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c","versionType":"git"},{"version":"b52ca352489be8beb7de3a8181509a0deaf72e21","status":"affected","versionType":"git"},{"version":"4.19.49","status":"affected","lessThan":"4.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/of/overlay.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.0","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/of/overlay.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/004a0ee2e5315f1245775b369fcb940e8cda3807"},{"url":"https://git.kernel.org/stable/c/f6f70b12ae3e4074e4cd3f42cd66fd482ce7a4b5"},{"url":"https://git.kernel.org/stable/c/50c3663790c61648a51f197970f660fd543269a7"},{"url":"https://git.kernel.org/stable/c/936f1ffcb87a1c50938a21176a6463af162cf4b5"},{"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:40:16.306Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.49"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}