fkie_cve-2023-52639
Vulnerability from fkie_nvd
Published
2024-04-03 15:15
Modified
2025-03-17 15:40
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: fix race during shadow creation Right now it is possible to see gmap->private being zero in kvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the fact that we add gmap->private == kvm after creation: static int acquire_gmap_shadow(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) { [...] gmap = gmap_shadow(vcpu->arch.gmap, asce, edat); if (IS_ERR(gmap)) return PTR_ERR(gmap); gmap->private = vcpu->kvm; Let children inherit the private field of the parent.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f5572c0323cf8b4f1f0618178648a25b8fb8a380Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f5572c0323cf8b4f1f0618178648a25b8fb8a380Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.8
linux linux_kernel 6.8
linux linux_kernel 6.8


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
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              "matchCriteriaId": "CF875774-2060-479B-8422-FF0D07235FE3",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: vsie: fix race during shadow creation\n\nRight now it is possible to see gmap-\u003eprivate being zero in\nkvm_s390_vsie_gmap_notifier resulting in a crash.  This is due to the\nfact that we add gmap-\u003eprivate == kvm after creation:\n\nstatic int acquire_gmap_shadow(struct kvm_vcpu *vcpu,\n                               struct vsie_page *vsie_page)\n{\n[...]\n        gmap = gmap_shadow(vcpu-\u003earch.gmap, asce, edat);\n        if (IS_ERR(gmap))\n                return PTR_ERR(gmap);\n        gmap-\u003eprivate = vcpu-\u003ekvm;\n\nLet children inherit the private field of the parent."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: KVM: s390: vsie: corrige la ejecuci\u00f3n durante la creaci\u00f3n de la sombra. En este momento es posible ver que gmap-\u0026gt;private es cero en kvm_s390_vsie_gmap_notifier, lo que provoca un bloqueo. Esto se debe al hecho de que agregamos gmap-\u0026gt;private == kvm despu\u00e9s de la creaci\u00f3n: static int adquirir_gmap_shadow(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) { [...] gmap = gmap_shadow(vcpu-\u0026gt;arch.gmap, asce, edat); si (IS_ERR(gmap)) devuelve PTR_ERR(gmap); gmap-\u0026gt;privado = vcpu-\u0026gt;kvm; Deje que los ni\u00f1os hereden el campo privado del padre."
    }
  ],
  "id": "CVE-2023-52639",
  "lastModified": "2025-03-17T15:40:20.033",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-04-03T15:15:51.467",
  "references": [
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      "tags": [
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    }
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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