GHSA-RPC3-VJ77-CXWG
Vulnerability from github – Published: 2026-06-08 18:31 – Updated: 2026-07-08 15:31In the Linux kernel, the following vulnerability has been resolved:
pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()
In scpsys_get_bus_protection_legacy(), of_find_node_with_property() returns a device node with its reference count incremented. The function then calls of_node_put(node) before checking whether syscon_regmap_lookup_by_phandle() returns an error. If an error occurs, dev_err_probe() dereferences the node pointer to print diagnostic information, but the node memory may have already been freed due to the earlier of_node_put(), leading to a use-after-free vulnerability.
Fix this by moving the of_node_put() call after the error check, ensuring the node is still valid when accessed in the error path.
{
"affected": [],
"aliases": [
"CVE-2026-46308"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-08T17:16:49Z",
"severity": "HIGH"
},
"details": "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.",
"id": "GHSA-rpc3-vj77-cxwg",
"modified": "2026-07-08T15:31:36Z",
"published": "2026-06-08T18:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46308"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/38d8410021b55d226847b2ac8d189d89fe5a8866"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cb27e43c0511e9e1ca8818d231656070b11c18cf"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ec1fcddb3117d9452210e838fd37389ee61e10e8"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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