{"id":86934,"date":"2026-04-12T21:31:05","date_gmt":"2026-04-12T21:31:05","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2024-36354-critical-vulnerability-affecting-dimm-spd-metadata-input-validation","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2024-36354-critical-vulnerability-affecting-dimm-spd-metadata-input-validation\/","title":{"rendered":"CVE-2024-36354: Critical Vulnerability Affecting DIMM SPD Metadata Input Validation<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

This report details an identified vulnerability, CVE-2024-36354, in the improper input validation for Dual Inline Memory Module (DIMM) Serial Presence Detect (SPD) metadata. This flaw potentially impacts any system with a non-compliant DIMM, and it presents a significant threat due to the possibility of bypassing System Management Mode (SMM) isolation. The vulnerability could lead to arbitrary code execution at the SMM level and is therefore of high concern.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2024-36354
\nSeverity: High (CVSS: 7.5)
\nAttack Vector: Physical, Local, or Root of Trust for BIOS update
\nPrivileges Required: Ring0, Physical access, or Control over Root of Trust for BIOS update
\nUser Interaction: None
\nImpact: Bypassing SMM isolation potentially leading to arbitrary code execution at the SMM level. This could result in system compromise or data leakage.<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

DIMM SPD | All versions prior to latest patch
\nBIOS | All versions not including the latest security update<\/p>\n

How the Exploit Works<\/strong><\/p>\n

An attacker exploiting CVE-2024-36354 would manipulate the input validation for DIMM SPD metadata. This can be achieved through physical access to the system, ring0 access, or control over the Root of Trust for BIOS update. Successful manipulation could allow the attacker to bypass SMM isolation, granting them the ability to execute code at the SMM level, which could potentially compromise the entire system or lead to data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

# Attacker gains ring0 access\nsudo su\n# Attacker manipulates DIMM SPD metadata\necho 'malicious_code' > \/sys\/devices\/system\/edac\/mc\/mc0\/dimm1\/spd\n# Attacker exploits vulnerability to bypass SMM isolation and execute code\n.\/exploit<\/code><\/pre>\n
This is a simple conceptual example and in real-world scenarios, the exploit would likely be more complex and may involve additional steps or stages.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This report details an identified vulnerability, CVE-2024-36354, in the improper input validation for Dual Inline Memory Module (DIMM) Serial Presence Detect (SPD) metadata. This flaw potentially impacts any system with a non-compliant DIMM, and it presents a significant threat due to the possibility of bypassing System Management Mode (SMM) isolation. The vulnerability could lead […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86934","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t