ghsa-p9j3-r5pw-645f
Vulnerability from github
Published
2024-04-03 15:30
Modified
2024-04-03 15:30
Details

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

KVM: arm64: Fix circular locking dependency

The rule inside kvm enforces that the vcpu->mutex is taken inside kvm->lock. The rule is violated by the pkvm_create_hyp_vm() which acquires the kvm->lock while already holding the vcpu->mutex lock from kvm_vcpu_ioctl(). Avoid the circular locking dependency altogether by protecting the hyp vm handle with the config_lock, much like we already do for other forms of VM-scoped data.

Show details on source website


{
  "affected": [],
  "aliases": [
    "CVE-2024-26691"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-03T15:15:52Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Fix circular locking dependency\n\nThe rule inside kvm enforces that the vcpu-\u003emutex is taken *inside*\nkvm-\u003elock. The rule is violated by the pkvm_create_hyp_vm() which acquires\nthe kvm-\u003elock while already holding the vcpu-\u003emutex lock from\nkvm_vcpu_ioctl(). Avoid the circular locking dependency altogether by\nprotecting the hyp vm handle with the config_lock, much like we already\ndo for other forms of VM-scoped data.",
  "id": "GHSA-p9j3-r5pw-645f",
  "modified": "2024-04-03T15:30:42Z",
  "published": "2024-04-03T15:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26691"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10c02aad111df02088d1a81792a709f6a7eca6cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ab1c40a1e915e350d9181a4603af393141970cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d16cebf01127f459dcfeb79ed77bd68b124c228"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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