CVE-2026-46288

{"id": "CVE-2026-46288", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.5}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1c668ea65506e67ce2eae07b69bb09fcdd86e309", "lessThan": "37318d1a27c9cc5a70d3cd7e49e30ec86f2b8ca1", "versionType": "git"}, {"status": "affected", "version": "1c668ea65506e67ce2eae07b69bb09fcdd86e309", "lessThan": "7f0f0926f3010b10cff5e93446258f971e42f2fd", "versionType": "git"}, {"status": "affected", "version": "1c668ea65506e67ce2eae07b69bb09fcdd86e309", "lessThan": "6fdad20b7975bdc32e85b45f8f7c640f6687b81f", "versionType": "git"}, {"status": "affected", "version": "1c668ea65506e67ce2eae07b69bb09fcdd86e309", "lessThan": "faecdd423c27f0d6090156a435ba9dbbac0eaddb", "versionType": "git"}], "programFiles": ["drivers/of/unittest.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"status": "unaffected", "version": "0", "lessThan": "6.12", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.86", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.27", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.4", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/of/unittest.c"], "defaultStatus": "affected"}]}], "published": "2026-06-08T17:16:46.957", "references": [{"url": "https://git.kernel.org/stable/c/37318d1a27c9cc5a70d3cd7e49e30ec86f2b8ca1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6fdad20b7975bdc32e85b45f8f7c640f6687b81f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7f0f0926f3010b10cff5e93446258f971e42f2fd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/faecdd423c27f0d6090156a435ba9dbbac0eaddb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: unittest: fix use-after-free in of_unittest_changeset()\n\nThe variable 'parent' is assigned the value of 'nchangeset' earlier in the\nfunction, meaning both point to the same struct device_node. The call to\nof_node_put(nchangeset) can decrement the reference count to zero and\nfree the node if there are no other holders. After that, the code still\nuses 'parent' to check for the presence of a property and to read a\nstring property, leading to a use-after-free.\n\nFix this by moving the of_node_put() call after the last access to\n'parent', avoiding the UAF."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nof: unittest: corregir uso despu\u00e9s de liberaci\u00f3n en of_unittest_changeset()\n\nLa variable 'parent' se le asigna el valor de 'nchangeset' anteriormente en la funci\u00f3n, lo que significa que ambos apuntan a la misma estructura device_node. La llamada a of_node_put(nchangeset) puede decrementar el contador de referencias a cero y liberar el nodo si no hay otros poseedores. Despu\u00e9s de eso, el c\u00f3digo todav\u00eda usa 'parent' para verificar la presencia de una propiedad y para leer una propiedad de cadena, lo que lleva a un uso despu\u00e9s de liberaci\u00f3n.\n\nSolucione esto moviendo la llamada a of_node_put() despu\u00e9s del \u00faltimo acceso a 'parent', evitando el UAF."}], "lastModified": "2026-07-23T08:10:00.137", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A868CB0E-7563-461B-9681-F1CE80B353EE", "versionEndExcluding": "6.12.86", "versionStartIncluding": "6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A10AC84F-C058-47D5-85B4-E6E51A613B74", "versionEndExcluding": "6.18.27", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3", "versionEndExcluding": "7.0.4", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}