CVE-2026-43328

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a\ndouble free.\n\nKeep the direct kfree(dbs_data) for the gov->init() failure path, but\nafter kobject_init_and_add() has been called, let kobject_put() handle\nthe cleanup through cpufreq_dbs_data_release()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/cpufreq/cpufreq_governor.c"], "versions": [{"version": "4ebe36c94aed95de71a8ce6a6762226d31c938ee", "lessThan": "56bc91ee78babe9578585a2bc137abc4b3115ff3", "status": "affected", "versionType": "git"}, {"version": "4ebe36c94aed95de71a8ce6a6762226d31c938ee", "lessThan": "4b9118e93d2499bb2808ef3742fa0ce06f4f8117", "status": "affected", "versionType": "git"}, {"version": "4ebe36c94aed95de71a8ce6a6762226d31c938ee", "lessThan": "019ea28629720c220daedf38107c8787f330dc05", "status": "affected", "versionType": "git"}, {"version": "4ebe36c94aed95de71a8ce6a6762226d31c938ee", "lessThan": 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"versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0A2B9540-02D5-41B4-B16A-82AF66FD4F36", "versionEndExcluding": "6.19.12", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.1.6:*:*:*:*:*:*:*", "matchCriteriaId": "E0B7D43E-3632-4F0C-9719-99E6F5752967", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path\n\nWhen kobject_init_and_add() fails, cpufreq_dbs_governor_init() calls\nkobject_put(&dbs_data->attr_set.kobj).\n\nThe kobject release callback cpufreq_dbs_data_release() calls\ngov->exit(dbs_data) and kfree(dbs_data), but the current error path\nthen calls gov->exit(dbs_data) and kfree(dbs_data) again, causing a\ndouble free.\n\nKeep the direct kfree(dbs_data) for the gov->init() failure path, but\nafter kobject_init_and_add() has been called, let kobject_put() handle\nthe cleanup through cpufreq_dbs_data_release()."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncpufreq: governor: corregir doble liberaci\u00f3n en la ruta de error de cpufreq_dbs_governor_init()\n\nCuando kobject_init_and_add() falla, cpufreq_dbs_governor_init() llama a kobject_put(&dbs_data -> attr_set.kobj).\n\nLa funci\u00f3n de devoluci\u00f3n de llamada de liberaci\u00f3n de kobject cpufreq_dbs_data_release() llama a gov -> exit(dbs_data) y kfree(dbs_data), pero la ruta de error actual luego llama a gov -> exit(dbs_data) y kfree(dbs_data) de nuevo, causando una doble liberaci\u00f3n.\n\nMantener la kfree(dbs_data) directa para la ruta de fallo de gov -> init(), pero despu\u00e9s de que kobject_init_and_add() haya sido llamada, dejar que kobject_put() maneje la limpieza a trav\u00e9s de cpufreq_dbs_data_release()."}], "id": "CVE-2026-43328", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43328", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:35:53.949941Z", "version": "2.0.3"}}]}, "published": "2026-05-08T14:16:42.397", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/019ea28629720c220daedf38107c8787f330dc05"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3bf9d023d2329a0e5379f2fd09d06ef09729cd9d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/427d048e4f6acbfa01b5a8062449fe0ee8987c0d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4b9118e93d2499bb2808ef3742fa0ce06f4f8117"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/56bc91ee78babe9578585a2bc137abc4b3115ff3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/da39ee627fd82b52068d4d5f115749a8b7d271f9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path", "id": "2468079", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468079"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-763", "details": ["A flaw was found in the Linux kernel's cpufreq governor. An error in the cpufreq_dbs_governor_init() function's cleanup path, specifically when kobject_init_and_add() fails, causes a double free of memory. This memory corruption vulnerability can be exploited by a local attacker, potentially leading to system instability or a denial of service (DoS)."], "name": "CVE-2026-43328", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43328\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43328\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43328.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4ebe36c94aed95de71a8ce6a6762226d31c938ee,56bc91ee78babe9578585a2bc137abc4b3115ff3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4ebe36c94aed95de71a8ce6a6762226d31c938ee,019ea28629720c220daedf38107c8787f330dc05)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4ebe36c94aed95de71a8ce6a6762226d31c938ee,3bf9d023d2329a0e5379f2fd09d06ef09729cd9d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4ebe36c94aed95de71a8ce6a6762226d31c938ee,427d048e4f6acbfa01b5a8062449fe0ee8987c0d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4ebe36c94aed95de71a8ce6a6762226d31c938ee,d2703b4f8fb7cc6f0dfdb2dc2359cc46189e7357)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4ebe36c94aed95de71a8ce6a6762226d31c938ee,6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4ebe36c94aed95de71a8ce6a6762226d31c938ee,da39ee627fd82b52068d4d5f115749a8b7d271f9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "e977b1477a6725868302957e6b5c330220391797"}}], "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": "5.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.253,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.168,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.134,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.81,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.22,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.12,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0,*)"}}], "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": "2026-05-08T20:00:12.751368+00:00", "updated": "2026-05-18T14:00:19.133395+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}