GHSA-RFJ6-7G8R-3866
Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-18 18:31In the Linux kernel, the following vulnerability has been resolved:
irqchip/gic-v5: Check get_logical_index() return value in MADT IAFFID parsing
In gic_acpi_parse_iaffid() a given MADT GICC entry might not correspond to a logical cpu recognized by the kernel, resulting in the cpu variable initialization to an error value.
Currently, the get_logical_index() return value is not checked for failure, which might result in out-of-bounds memory corruption while trying to index a per_cpu variable array.
Add a check to evaluate get_logical_index() return value.
{
"affected": [],
"aliases": [
"CVE-2026-90120"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-17T17:17:04Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v5: Check get_logical_index() return value in MADT IAFFID parsing\n\nIn gic_acpi_parse_iaffid() a given MADT GICC entry might not correspond\nto a logical cpu recognized by the kernel, resulting in the cpu variable\ninitialization to an error value.\n\nCurrently, the get_logical_index() return value is not checked for failure,\nwhich might result in out-of-bounds memory corruption while trying to\nindex a per_cpu variable array.\n\nAdd a check to evaluate get_logical_index() return value.",
"id": "GHSA-rfj6-7g8r-3866",
"modified": "2026-09-18T18:31:27Z",
"published": "2026-09-17T18:31:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90120"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/328affc639ce9873a7a0a3fd6b8339f19767529b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6caeb878f809bdf0aec2fdd96f3d41ef4b69fc69"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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