GHSA-V4VV-7V49-M3WG
Vulnerability from github – Published: 2024-09-13 09:30 – Updated: 2025-11-04 00:31In 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.
{
"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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