GHSA-24Q3-GVVV-JW93
Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-18 18:31In the Linux kernel, the following vulnerability has been resolved:
firmware: coreboot: Validate table bounds
The existing coreboot_table_populate() bounds checks limit individual entries to the mapped length. However, coreboot_table_probe() replaces the platform resource length with header and table sizes supplied by firmware before mapping the full table.
A malformed table can overflow the 32-bit size addition or advertise an extent beyond the resource, causing the driver to map and parse memory outside the resource. A resource shorter than the fixed header is also mapped as though it contained a complete header.
Reject resources shorter than the fixed header. After validating the signature, require a complete header, calculate the advertised extent with overflow checking, and reject extents beyond the resource before remapping the table.
{
"affected": [],
"aliases": [
"CVE-2026-90341"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-17T17:17:32Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: coreboot: Validate table bounds\n\nThe existing coreboot_table_populate() bounds checks limit individual\nentries to the mapped length. However, coreboot_table_probe() replaces\nthe platform resource length with header and table sizes supplied by\nfirmware before mapping the full table.\n\nA malformed table can overflow the 32-bit size addition or advertise an\nextent beyond the resource, causing the driver to map and parse memory\noutside the resource. A resource shorter than the fixed header is also\nmapped as though it contained a complete header.\n\nReject resources shorter than the fixed header. After validating the\nsignature, require a complete header, calculate the advertised extent\nwith overflow checking, and reject extents beyond the resource before\nremapping the table.",
"id": "GHSA-24q3-gvvv-jw93",
"modified": "2026-09-18T18:31:30Z",
"published": "2026-09-17T18:32:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90341"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2d98a3b89394f283f054a4a54587c14ee89acaf9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3cca0d6dd4c2636d2514234233cb02db76621607"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/88027241c1d2c3213bac937a1c2cb89a5775a413"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a58a57a1076f8c5dae0327e3710899478c3be901"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d848fac90c6f0566e7b93066b0b86024f65f395e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e82f260a74dea8cdd7857f2cc66f73d0da522bb3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f79f621215a0944c4a0e1b3b86b99e433ae8c527"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fd93859ecfa5b6495a6863c18fd923a7666def26"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
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|---|
Nomenclature
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