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In the Linux kernel, the following vulnerability has been resolved: firmware: coreboot: Validate table bounds The existing coreboot_table_populate()… (CVE-2026-90341)

0
High
Published: 09/17/2026 (09/17/2026, 18:32:01 UTC)
Source: GCVE Database

Description

In 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.

CVSS v3.1

Score 7.7high

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-24q3-gvvv-jw93
Osv Schema Version
1.4.0
Aliases
["CVE-2026-90341"]
Database Specific Severity
HIGH
Cvss Version
3.1

Threat ID: 6aade51e55bf5e2cf5edc167

Added to database: 09/19/2026, 01:27:58 UTC

Last updated: 09/19/2026, 01:27:58 UTC

Views: 1

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