Vulnerability-Lookup

CVE-2026-64461 (GCVE-0-2026-64461)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-07-25 08:51

Title

PCI: mediatek: Fix IRQ domain leak when port fails to enable

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.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/e23da72ef202654a7…
https://git.kernel.org/stable/c/ec7c05eed47d8b15c…
https://git.kernel.org/stable/c/1fbe8972a39548a63…
https://git.kernel.org/stable/c/fe8c701a53c2816cd…
https://git.kernel.org/stable/c/ce52e494a7555bdae…
https://git.kernel.org/stable/c/6e6a529d6f7794133…
https://git.kernel.org/stable/c/df77314b3bedbd9ad…
https://git.kernel.org/stable/c/f865a57896bd92d76…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b099631df160ec608cd6147f4d20a8042567a5b8 , < e23da72ef202654a7d5269885c4fa39a8404db76 (git) Affected: b099631df160ec608cd6147f4d20a8042567a5b8 , < ec7c05eed47d8b15c45380aee7ca168a82e15035 (git) Affected: b099631df160ec608cd6147f4d20a8042567a5b8 , < 1fbe8972a39548a633d06d7b03a01b7b119a2c12 (git) Affected: b099631df160ec608cd6147f4d20a8042567a5b8 , < fe8c701a53c2816cd82301f66c671d952003c1b0 (git) Affected: b099631df160ec608cd6147f4d20a8042567a5b8 , < ce52e494a7555bdae1d990a2654fd7547ef6d986 (git) Affected: b099631df160ec608cd6147f4d20a8042567a5b8 , < 6e6a529d6f779413379b4404c9ef6a36c0337225 (git) Affected: b099631df160ec608cd6147f4d20a8042567a5b8 , < df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e (git) Affected: b099631df160ec608cd6147f4d20a8042567a5b8 , < f865a57896bd92d7662eb2818d8f48872e2cbbc7 (git)
Linux	Linux	Affected: 4.14 Unaffected: 0 , < 4.14 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

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JSON

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{
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          "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."
        }
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        },
        {
          "url": "https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7"
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    "datePublished": "2026-07-25T08:51:28.309Z",
    "dateReserved": "2026-07-19T15:36:31.789Z",
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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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/pci/controller/pcie-mediatek.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b099631df160ec608cd6147f4d20a8042567a5b8\",\"lessThan\":\"e23da72ef202654a7d5269885c4fa39a8404db76\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b099631df160ec608cd6147f4d20a8042567a5b8\",\"lessThan\":\"ec7c05eed47d8b15c45380aee7ca168a82e15035\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b099631df160ec608cd6147f4d20a8042567a5b8\",\"lessThan\":\"1fbe8972a39548a633d06d7b03a01b7b119a2c12\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b099631df160ec608cd6147f4d20a8042567a5b8\",\"lessThan\":\"fe8c701a53c2816cd82301f66c671d952003c1b0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b099631df160ec608cd6147f4d20a8042567a5b8\",\"lessThan\":\"ce52e494a7555bdae1d990a2654fd7547ef6d986\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b099631df160ec608cd6147f4d20a8042567a5b8\",\"lessThan\":\"6e6a529d6f779413379b4404c9ef6a36c0337225\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b099631df160ec608cd6147f4d20a8042567a5b8\",\"lessThan\":\"df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b099631df160ec608cd6147f4d20a8042567a5b8\",\"lessThan\":\"f865a57896bd92d7662eb2818d8f48872e2cbbc7\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/pci/controller/pcie-mediatek.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T15:58:53Z",
      "cve": "CVE-2026-64461",
      "id": "CVE-2026-64461",
      "initial_release_date": "2026-07-25T15:58:53Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64461",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64461.json",
      "version": "2"
    }
  }
}

GHSA-7RVV-9QXR-RH4X

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-64461"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:31Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-7rvv-9qxr-rh4x",
  "modified": "2026-07-25T12:31:36Z",
  "published": "2026-07-25T12:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64461"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-64461 (GCVE-0-2026-64461)

GHSA-7RVV-9QXR-RH4X

Tags

Sightings

Nomenclature