CVE-2026-46308 (GCVE-0-2026-46308)
Vulnerability from cvelistv5
Published
2026-06-08 15:46
Modified
2026-06-08 15:46
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In 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.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"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-rc3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.30",
"versionStartIncluding": "6.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0.7",
"versionStartIncluding": "6.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1-rc3",
"versionStartIncluding": "6.18",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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."
}
],
"providerMetadata": {
"dateUpdated": "2026-06-08T15:46:36.218Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/cb27e43c0511e9e1ca8818d231656070b11c18cf"
},
{
"url": "https://git.kernel.org/stable/c/38d8410021b55d226847b2ac8d189d89fe5a8866"
},
{
"url": "https://git.kernel.org/stable/c/ec1fcddb3117d9452210e838fd37389ee61e10e8"
}
],
"title": "pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-46308",
"datePublished": "2026-06-08T15:46:36.218Z",
"dateReserved": "2026-05-13T15:03:33.111Z",
"dateUpdated": "2026-06-08T15:46:36.218Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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