CVE-2026-64461 (GCVE-0-2026-64461)
Vulnerability from cvelistv5
Published
2026-07-25 08:51
Modified
2026-08-17 04:56
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
PCI: mediatek: Fix IRQ domain leak when port fails to enable
When mtk_pcie_enable_port() fails, mtk_pcie_port_free() removes the port
from pcie->ports and frees the port structure. However, the IRQ domains set
up earlier by mtk_pcie_init_irq_domain() are never freed.
Fix this by refactoring mtk_pcie_irq_teardown() into a per-port helper,
mtk_pcie_irq_teardown_port(), and calling it from mtk_pcie_setup() when
mtk_pcie_enable_port() fails. Since the IRQ teardown must only happen in
the probe error path (during resume, child devices may have active MSI
mappings and the NOIRQ context prohibits sleeping locks),
mtk_pcie_enable_port() is changed to return an error code so callers can
distinguish the two paths and act accordingly.
This issue was reported by Sashiko while reviewing the EcoNet EN7528 SoC
support series.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: b099631df160ec608cd6147f4d20a8042567a5b8 Version: b099631df160ec608cd6147f4d20a8042567a5b8 Version: b099631df160ec608cd6147f4d20a8042567a5b8 Version: b099631df160ec608cd6147f4d20a8042567a5b8 Version: b099631df160ec608cd6147f4d20a8042567a5b8 Version: b099631df160ec608cd6147f4d20a8042567a5b8 Version: b099631df160ec608cd6147f4d20a8042567a5b8 Version: b099631df160ec608cd6147f4d20a8042567a5b8 |
||
{
"containers": {
"cna": {
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"programFiles": [
"drivers/pci/controller/pcie-mediatek.c"
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"versions": [
{
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"version": "4.14"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
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},
{
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"status": "unaffected",
"version": "6.12.97",
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},
{
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"status": "unaffected",
"version": "6.18.39",
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},
{
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"version": "7.1.4",
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},
{
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}
]
}
],
"cpeApplicability": [
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"nodes": [
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],
"negate": false,
"operator": "OR"
}
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}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: mediatek: Fix IRQ domain leak when port fails to enable\n\nWhen mtk_pcie_enable_port() fails, mtk_pcie_port_free() removes the port\nfrom pcie-\u003eports and frees the port structure. However, the IRQ domains set\nup earlier by mtk_pcie_init_irq_domain() are never freed.\n\nFix this by refactoring mtk_pcie_irq_teardown() into a per-port helper,\nmtk_pcie_irq_teardown_port(), and calling it from mtk_pcie_setup() when\nmtk_pcie_enable_port() fails. Since the IRQ teardown must only happen in\nthe probe error path (during resume, child devices may have active MSI\nmappings and the NOIRQ context prohibits sleeping locks),\nmtk_pcie_enable_port() is changed to return an error code so callers can\ndistinguish the two paths and act accordingly.\n\nThis issue was reported by Sashiko while reviewing the EcoNet EN7528 SoC\nsupport series."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:56:06.127Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76"
},
{
"url": "https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035"
},
{
"url": "https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12"
},
{
"url": "https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0"
},
{
"url": "https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986"
},
{
"url": "https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225"
},
{
"url": "https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e"
},
{
"url": "https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7"
}
],
"title": "PCI: mediatek: Fix IRQ domain leak when port fails to enable",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64461",
"datePublished": "2026-07-25T08:51:28.309Z",
"dateReserved": "2026-07-19T15:36:31.789Z",
"dateUpdated": "2026-08-17T04:56:06.127Z",
"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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