FKIE_CVE-2024-36953

Vulnerability from fkie_nvd - Published: 2024-05-30 16:15 - Updated: 2025-12-23 19:16
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-v2: Check for non-NULL vCPU in vgic_v2_parse_attr() vgic_v2_parse_attr() is responsible for finding the vCPU that matches the user-provided CPUID, which (of course) may not be valid. If the ID is invalid, kvm_get_vcpu_by_id() returns NULL, which isn't handled gracefully. Similar to the GICv3 uaccess flow, check that kvm_get_vcpu_by_id() actually returns something and fail the ioctl if not.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/01981276d64e542c177b243f7c979fee855d5487Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17db92da8be5dd3bf63c01f4109fe47db64fc66fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a5b0378ac6776c7c31b18e0f3c1389bd6005e80Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4404465a1bee3607ad90a4c5f9e16dfd75b85728Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ddb4f372fc63210034b903d96ebbeb3c7195adbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8d6a1c8e3de36cb0f5e866f1a582b00939e23104Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/01981276d64e542c177b243f7c979fee855d5487Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/17db92da8be5dd3bf63c01f4109fe47db64fc66fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3a5b0378ac6776c7c31b18e0f3c1389bd6005e80Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4404465a1bee3607ad90a4c5f9e16dfd75b85728Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6ddb4f372fc63210034b903d96ebbeb3c7195adbPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8d6a1c8e3de36cb0f5e866f1a582b00939e23104Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00019.htmlThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.9
linux linux_kernel 6.9
linux linux_kernel 6.9
linux linux_kernel 6.9
linux linux_kernel 6.9
linux linux_kernel 6.9
debian debian_linux 10.0
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic-v2: Check for non-NULL vCPU in vgic_v2_parse_attr()\n\nvgic_v2_parse_attr() is responsible for finding the vCPU that matches\nthe user-provided CPUID, which (of course) may not be valid. If the ID\nis invalid, kvm_get_vcpu_by_id() returns NULL, which isn\u0027t handled\ngracefully.\n\nSimilar to the GICv3 uaccess flow, check that kvm_get_vcpu_by_id()\nactually returns something and fail the ioctl if not."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: KVM: arm64: vgic-v2: Verifique vCPU que no sea NULL en vgic_v2_parse_attr() vgic_v2_parse_attr() es responsable de encontrar la vCPU que coincida con el CPUID proporcionado por el usuario, que (de curso) puede no ser v\u00e1lido. Si el ID no es v\u00e1lido, kvm_get_vcpu_by_id() devuelve NULL, que no se maneja correctamente. De manera similar al flujo de uaccess de GICv3, verifique que kvm_get_vcpu_by_id() realmente devuelva algo y falle el ioctl si no."
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  "id": "CVE-2024-36953",
  "lastModified": "2025-12-23T19:16:51.333",
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          "baseScore": 5.5,
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          "confidentialityImpact": "NONE",
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Sightings

Author Source Type Date

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.