CVE-2026-46308

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{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/pmdomain/mediatek/mtk-pm-domains.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "cb27e43c0511e9e1ca8818d231656070b11c18cf", "status": "affected", "version": "c29345fa5f66bea0790cf2219f57b974d4fc177b", "versionType": "git"}, {"lessThan": "38d8410021b55d226847b2ac8d189d89fe5a8866", "status": "affected", "version": "c29345fa5f66bea0790cf2219f57b974d4fc177b", "versionType": "git"}, {"lessThan": "ec1fcddb3117d9452210e838fd37389ee61e10e8", "status": "affected", "version": "c29345fa5f66bea0790cf2219f57b974d4fc177b", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/pmdomain/mediatek/mtk-pm-domains.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"lessThan": "6.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.30", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9EB9FADE-E22F-41C2-9790-4F5564D59E62", "versionEndExcluding": "6.18.30", "versionStartIncluding": "6.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D0893CA7-9AE6-4DFE-AC75-48967D73AD8E", "versionEndExcluding": "7.0.7", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()\n\nIn scpsys_get_bus_protection_legacy(), of_find_node_with_property()\nreturns a device node with its reference count incremented. The function\nthen calls of_node_put(node) before checking whether\nsyscon_regmap_lookup_by_phandle() returns an error. If an error occurs,\ndev_err_probe() dereferences the node pointer to print diagnostic\ninformation, but the node memory may have already been freed due to the\nearlier of_node_put(), leading to a use-after-free vulnerability.\n\nFix this by moving the of_node_put() call after the error check, ensuring\nthe node is still valid when accessed in the error path."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\npmdomain: mediatek: soluciona el uso despu\u00e9s de liberaci\u00f3n en scpsys_get_bus_protection_legacy()\n\nEn scpsys_get_bus_protection_legacy(), of_find_node_with_property() devuelve un nodo de dispositivo con su contador de referencias incrementado. La funci\u00f3n luego llama a of_node_put(node) antes de verificar si syscon_regmap_lookup_by_phandle() devuelve un error. Si ocurre un error, dev_err_probe() desreferencia el puntero del nodo para imprimir informaci\u00f3n de diagn\u00f3stico, pero la memoria del nodo puede haber sido liberada ya debido a la llamada anterior a of_node_put(), lo que lleva a una vulnerabilidad de uso despu\u00e9s de liberaci\u00f3n.\n\nEsto se soluciona moviendo la llamada a of_node_put() despu\u00e9s de la verificaci\u00f3n de errores, asegurando que el nodo siga siendo v\u00e1lido cuando se accede a \u00e9l en la ruta de error."}], "id": "CVE-2026-46308", "lastModified": "2026-07-23T08:10:00.137", "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"}]}, "published": "2026-06-08T17:16:49.707", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/38d8410021b55d226847b2ac8d189d89fe5a8866"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cb27e43c0511e9e1ca8818d231656070b11c18cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ec1fcddb3117d9452210e838fd37389ee61e10e8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()", "id": "2486440", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2486440"}, "csaw": false, "cwe": "CWE-826", "details": ["A flaw was found in the Linux kernel, specifically within the pmdomain: mediatek component. An issue in the scpsys_get_bus_protection_legacy() function's error handling could lead to a use-after-free vulnerability. This occurs when memory is prematurely released before error checks are completed, which can result in system instability or a denial of service."], "name": "CVE-2026-46308", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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"}], "public_date": "2026-06-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46308\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46308\nhttps://lore.kernel.org/linux-cve-announce/2026060801-CVE-2026-46308-d902@gregkh/T"]}

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