GHSA-V4VV-7V49-M3WG

Vulnerability from github – Published: 2024-09-13 09:30 – Updated: 2025-11-04 00:31
VLAI
Details

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

KVM: arm64: Make ICC_SGI_EL1 undef in the absence of a vGICv3

On a system with a GICv3, if a guest hasn't been configured with GICv3 and that the host is not capable of GICv2 emulation, a write to any of the ICC_SGI_EL1 registers is trapped to EL2.

We therefore try to emulate the SGI access, only to hit a NULL pointer as no private interrupt is allocated (no GIC, remember?).

The obvious fix is to give the guest what it deserves, in the shape of a UNDEF exception.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-46707"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-13T07:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3\n\nOn a system with a GICv3, if a guest hasn\u0027t been configured with\nGICv3 and that the host is not capable of GICv2 emulation,\na write to any of the ICC_*SGI*_EL1 registers is trapped to EL2.\n\nWe therefore try to emulate the SGI access, only to hit a NULL\npointer as no private interrupt is allocated (no GIC, remember?).\n\nThe obvious fix is to give the guest what it deserves, in the\nshape of a UNDEF exception.",
  "id": "GHSA-v4vv-7v49-m3wg",
  "modified": "2025-11-04T00:31:25Z",
  "published": "2024-09-13T09:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46707"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15818af2f7aa55eff375333cb7689df15d3f24ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2073132f6ed3079369e857a8deb33d11bdd983bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e6245ebe7ef341639e9a7e402b3ade8ad45a19f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94d4fbad01b19ec5eab3d6b50aaec4f9db8b2d8d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96b076e8ee5bc3a1126848c8add0f74bd30dc9d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d7629bec5c3f80bd0e3bf8103c06a2f7046bd92"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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