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GHSA-H6Q6-G8XJ-RF6W

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

In the Linux kernel, the following vulnerability has been resolved:

irqchip/renesas-irqc: Fix generic interrupt chip leak on remove

The driver allocates domain generic chips probe. However, on driver removal, the generic chips are not automatically freed when the interrupt domain is removed because the domain flags do not include IRQ_DOMAIN_FLAG_DESTROY_GC.

This causes both the domain generic chips structure and the associated generic chips to be leaked. Additionally, the generic chips remain on the global list and may later be accessed by generic interrupt chip suspend, resume, or shutdown callbacks after the driver has been removed, potentially resulting in a use-after-free and kernel crash.

Fix the resource leak by setting IRQ_DOMAIN_FLAG_DESTROY_GC on the interrupt domain; this lets the interrupt domain core automatically release all generic chips when irq_domain_remove() is invoked, removing the need for manual cleanup calls in error paths and remove callback.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-93072"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:18:01Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/renesas-irqc: Fix generic interrupt chip leak on remove\n\nThe driver allocates domain generic chips probe. However, on driver\nremoval, the generic chips are not automatically freed when the interrupt\ndomain is removed because the domain flags do not include\nIRQ_DOMAIN_FLAG_DESTROY_GC.\n\nThis causes both the domain generic chips structure and the associated\ngeneric chips to be leaked. Additionally, the generic chips remain on the\nglobal list and may later be accessed by generic interrupt chip suspend,\nresume, or shutdown callbacks after the driver has been removed,\npotentially resulting in a use-after-free and kernel crash.\n\nFix the resource leak by setting IRQ_DOMAIN_FLAG_DESTROY_GC on the\ninterrupt domain; this lets the interrupt domain core automatically\nrelease all generic chips when irq_domain_remove() is invoked, removing\nthe need for manual cleanup calls in error paths and remove callback.",
  "id": "GHSA-h6q6-g8xj-rf6w",
  "modified": "2026-09-17T18:32:09Z",
  "published": "2026-09-17T18:32:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93072"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d39757ef791f90028da9c8b7c1fbbb497237e58"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4bf7614d048434326081eef0ebef33cb77fe2ffc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c614f83301d464e2fb498d63552490d137ea10d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9acc996cb2e8477ae81bd7c067fec15202d6bc89"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-93072 (GCVE-0-2026-93072)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10

Title

irqchip/renesas-irqc: Fix generic interrupt chip leak on remove

Summary

In the Linux kernel, the following vulnerability has been resolved: irqchip/renesas-irqc: Fix generic interrupt chip leak on remove The driver allocates domain generic chips probe. However, on driver removal, the generic chips are not automatically freed when the interrupt domain is removed because the domain flags do not include IRQ_DOMAIN_FLAG_DESTROY_GC. This causes both the domain generic chips structure and the associated generic chips to be leaked. Additionally, the generic chips remain on the global list and may later be accessed by generic interrupt chip suspend, resume, or shutdown callbacks after the driver has been removed, potentially resulting in a use-after-free and kernel crash. Fix the resource leak by setting IRQ_DOMAIN_FLAG_DESTROY_GC on the interrupt domain; this lets the interrupt domain core automatically release all generic chips when irq_domain_remove() is invoked, removing the need for manual cleanup calls in error paths and remove callback.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/3d39757ef791f9002…
https://git.kernel.org/stable/c/4bf7614d048434326…
https://git.kernel.org/stable/c/9acc996cb2e8477ae…
https://git.kernel.org/stable/c/7c614f83301d464e2…
https://git.kernel.org/stable/c/616dd89d81ad9a3cf…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 99c221df33fbfa1b30e15dee879eb0a9ae1be353 , < 3d39757ef791f90028da9c8b7c1fbbb497237e58 (git) Affected: 99c221df33fbfa1b30e15dee879eb0a9ae1be353 , < 4bf7614d048434326081eef0ebef33cb77fe2ffc (git) Affected: 99c221df33fbfa1b30e15dee879eb0a9ae1be353 , < 9acc996cb2e8477ae81bd7c067fec15202d6bc89 (git) Affected: 99c221df33fbfa1b30e15dee879eb0a9ae1be353 , < 7c614f83301d464e2fb498d63552490d137ea10d (git) Affected: 99c221df33fbfa1b30e15dee879eb0a9ae1be353 , < 616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba (git)
Linux	Linux	Affected: 4.4 Unaffected: 0 , < 4.4 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
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        {
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          "programFiles": [
            "drivers/irqchip/irq-renesas-irqc.c"
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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    "datePublished": "2026-09-17T16:10:55.755Z",
    "dateReserved": "2026-09-17T15:57:05.661Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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