cve-2024-26691
Vulnerability from cvelistv5
Published
2024-04-03 14:54
Modified
2024-11-05 09:13
Severity ?
Summary
KVM: arm64: Fix circular locking dependency
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


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                "id": "CVE-2024-26691",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
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                "role": "CISA Coordinator",
                "timestamp": "2024-04-05T18:06:14.355944Z",
                "version": "2.0.3"
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    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/kvm/pkvm.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          "lang": "en",
          "value": "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."
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      "title": "KVM: arm64: Fix circular locking dependency",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26691",
    "datePublished": "2024-04-03T14:54:52.518Z",
    "dateReserved": "2024-02-19T14:20:24.155Z",
    "dateUpdated": "2024-11-05T09:13:58.638Z",
    "state": "PUBLISHED"
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  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26691\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-03T15:15:52.550\",\"lastModified\":\"2024-04-03T17:24:18.150\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: KVM: arm64: corrige la dependencia de bloqueo circular La regla dentro de kvm exige que vcpu-\u0026gt;mutex se tome *dentro* de kvm-\u0026gt;lock. La regla es violada por pkvm_create_hyp_vm() que adquiere el bloqueo kvm-\u0026gt;mientras ya mantiene el bloqueo vcpu-\u0026gt;mutex de kvm_vcpu_ioctl(). Evite por completo la dependencia del bloqueo circular protegiendo el identificador hyp vm con config_lock, de forma muy similar a como lo hacemos con otras formas de datos con alcance de VM.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/10c02aad111df02088d1a81792a709f6a7eca6cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3ab1c40a1e915e350d9181a4603af393141970cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3d16cebf01127f459dcfeb79ed77bd68b124c228\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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