CVE-2026-98855

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98855", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.376Z", "datePublished": "2026-10-18T15:51:09.970Z", "dateUpdated": "2026-10-30T12:40:16.306Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:40:16.306Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/of/overlay.c"], "versions": [{"version": "f96278810150fc39085d1872e5b39ea06366d03e", "lessThan": "004a0ee2e5315f1245775b369fcb940e8cda3807", "status": "affected", "versionType": "git"}, {"version": "f96278810150fc39085d1872e5b39ea06366d03e", "lessThan": "f6f70b12ae3e4074e4cd3f42cd66fd482ce7a4b5", "status": "affected", "versionType": "git"}, {"version": "f96278810150fc39085d1872e5b39ea06366d03e", "lessThan": "50c3663790c61648a51f197970f660fd543269a7", "status": "affected", "versionType": "git"}, {"version": "f96278810150fc39085d1872e5b39ea06366d03e", "lessThan": "936f1ffcb87a1c50938a21176a6463af162cf4b5", "status": "affected", "versionType": "git"}, {"version": "f96278810150fc39085d1872e5b39ea06366d03e", "lessThan": "d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a", "status": "affected", "versionType": "git"}, {"version": "f96278810150fc39085d1872e5b39ea06366d03e", "lessThan": "7dc6a769153c0457077a0da4888a00f61e66de15", "status": "affected", "versionType": "git"}, {"version": "f96278810150fc39085d1872e5b39ea06366d03e", "lessThan": "5857035a3b53a4e7b5a0d5a740189901ece0b079", "status": "affected", "versionType": "git"}, {"version": "f96278810150fc39085d1872e5b39ea06366d03e", "lessThan": "814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c", "status": "affected", "versionType": "git"}, {"version": "b52ca352489be8beb7de3a8181509a0deaf72e21", "status": "affected", "versionType": "git"}, {"version": "4.19.49", "lessThan": "4.20", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/of/overlay.c"], "versions": [{"version": "5.0", "status": "affected"}, {"version": "0", "lessThan": "5.0", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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"}]}]}], "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"}], "title": "of/overlay: put property on deadprops only after changeset add succeeds", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/of/overlay.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "004a0ee2e5315f1245775b369fcb940e8cda3807", "status": "affected", "version": "f96278810150fc39085d1872e5b39ea06366d03e", "versionType": "git"}, {"lessThan": "f6f70b12ae3e4074e4cd3f42cd66fd482ce7a4b5", "status": "affected", "version": "f96278810150fc39085d1872e5b39ea06366d03e", "versionType": "git"}, {"lessThan": "50c3663790c61648a51f197970f660fd543269a7", "status": "affected", "version": "f96278810150fc39085d1872e5b39ea06366d03e", "versionType": "git"}, {"lessThan": "936f1ffcb87a1c50938a21176a6463af162cf4b5", "status": "affected", "version": "f96278810150fc39085d1872e5b39ea06366d03e", "versionType": "git"}, {"lessThan": "d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a", "status": "affected", "version": "f96278810150fc39085d1872e5b39ea06366d03e", "versionType": "git"}, {"lessThan": "7dc6a769153c0457077a0da4888a00f61e66de15", "status": "affected", "version": "f96278810150fc39085d1872e5b39ea06366d03e", "versionType": "git"}, {"lessThan": "5857035a3b53a4e7b5a0d5a740189901ece0b079", "status": "affected", "version": "f96278810150fc39085d1872e5b39ea06366d03e", "versionType": "git"}, {"lessThan": "814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c", "status": "affected", "version": "f96278810150fc39085d1872e5b39ea06366d03e", "versionType": "git"}, {"status": "affected", "version": "b52ca352489be8beb7de3a8181509a0deaf72e21", "versionType": "git"}, {"lessThan": "4.20", "status": "affected", "version": "4.19.49", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/of/overlay.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.0"}, {"lessThan": "5.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-98855", "lastModified": "2026-10-30T13:21:31.093", "metrics": {}, "published": "2026-10-18T16:17:39.937", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/004a0ee2e5315f1245775b369fcb940e8cda3807"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/50c3663790c61648a51f197970f660fd543269a7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5857035a3b53a4e7b5a0d5a740189901ece0b079"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7dc6a769153c0457077a0da4888a00f61e66de15"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/936f1ffcb87a1c50938a21176a6463af162cf4b5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f6f70b12ae3e4074e4cd3f42cd66fd482ce7a4b5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: of/overlay: put property on deadprops only after changeset add succeeds", "id": "2555241", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555241"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1341", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nof/overlay: put property on deadprops only after changeset add succeeds\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.\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.", "A flaw was found in the Linux kernel's Device Tree overlay subsystem. When an error occurs while adding a property to a device tree overlay changeset, the allocated property is freed during error cleanup but remains tracked, leading to a second release (double-free) when the overlay node is torn down. A local user could exploit this vulnerability to trigger memory corruption, potentially leading to a Denial of Service (DoS) or privilege escalation."], "name": "CVE-2026-98855", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98855\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98855\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98855.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f96278810150fc39085d1872e5b39ea06366d03e,d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f96278810150fc39085d1872e5b39ea06366d03e,7dc6a769153c0457077a0da4888a00f61e66de15)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f96278810150fc39085d1872e5b39ea06366d03e,5857035a3b53a4e7b5a0d5a740189901ece0b079)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f96278810150fc39085d1872e5b39ea06366d03e,814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "b52ca352489be8beb7de3a8181509a0deaf72e21"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.19.49,4.20)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-18T22:00:20.103005+00:00", "title": "Linux Kernel Overlay Double-Over Free Leading to Kernel Memory Corruption", "updated": "2026-10-24T04:45:16.965443+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}