{"id":33853,"date":"2025-04-29T19:00:42","date_gmt":"2025-04-29T19:00:42","guid":{"rendered":""},"modified":"2025-09-16T07:09:12","modified_gmt":"2025-09-16T13:09:12","slug":"cve-2025-2073-out-of-bounds-read-vulnerability-in-google-chromeos-kernel","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-2073-out-of-bounds-read-vulnerability-in-google-chromeos-kernel\/","title":{"rendered":"CVE-2025-2073: Out-of-Bounds Read Vulnerability in Google ChromeOS Kernel<\/strong>"},"content":{"rendered":"

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

This blog post is intended to shed light on a high-severity security vulnerability tagged CVE-2025-2073 that affects Google ChromeOS Kernel Versions 6.1, 5.15, 5.10, 5.4, 4.19 and targets all devices where the Termina virtual machine is used. This vulnerability, stemming from an Out-of-Bounds Read in ip_set_bitmap_ip.c, holds potential for serious exploitation that could lead to system compromise or data leakage.
\nThe high severity of this exploit, coupled with the potential for privilege escalation<\/a>, makes it an imminent threat that needs immediate attention and remediation. The fact that it affects a broad spectrum of ChromeOS versions underscores its critical<\/a> nature.<\/p>\n

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

CVE ID: CVE-2025-2073
\nSeverity: High (CVSS Score: 8.8)
\nAttack Vector: Network
\nPrivileges Required: High (CAP_NET_ADMIN)
\nUser Interaction: None
\nImpact: Potential for system<\/a> compromise and data leakage.<\/p>\n

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

Product | Affected Versions<\/p>\n

Google ChromeOS Kernel | 6.1, 5.15, 5.10, 5.4, 4.19<\/p>\n

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

The vulnerability is due to an Out-of-Bounds Read<\/a> error in the ip_set_bitmap_ip.c file of Google ChromeOS Kernel. An attacker with CAP_NET_ADMIN privileges can exploit this vulnerability<\/a> by sending crafted ipset commands to the target system. These malformed commands trigger the out-of-bounds read, which leads to memory corruption<\/a>. The memory corruption could potentially be leveraged by the attacker to escalate their privileges and take control of the system<\/a>.<\/p>\n

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

While precise exploit code for this vulnerability<\/a> is not available, a conceptual example could look something like this:<\/p>\n

ipset create test bitmap:ip range 192.168.0.0\/24\nipset add test 192.168.0.1\nipset save test > crafted_commands.txt\n# Modify crafted_commands.txt to trigger out-of-bounds read\nipset restore < crafted_commands.txt<\/code><\/pre>\n
In this conceptual example, the attacker creates an ipset, adds an IP to it, saves the ipset, and then modifies the saved commands to trigger the vulnerability<\/a>. The attacker then reloads the crafted commands into ipset, which causes memory corruption and potentially escalates their privileges<\/a>.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
The recommended mitigation is to apply the vendor's patch once it becomes available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. These systems should be configured<\/a> to detect and block suspicious ipset commands. Administrators should also restrict the CAP_NET_ADMIN privilege to trusted users<\/a> only.
\nMonitoring system logs<\/a> for unusual ipset activity can also help detect attempted exploits. If any suspicious activity is detected, administrators should investigate immediately.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This blog post is intended to shed light on a high-severity security vulnerability tagged CVE-2025-2073 that affects Google ChromeOS Kernel Versions 6.1, 5.15, 5.10, 5.4, 4.19 and targets all devices where the Termina virtual machine is used. This vulnerability, stemming from an Out-of-Bounds Read in ip_set_bitmap_ip.c, holds potential for serious exploitation that 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":[1],"tags":[],"vendor":[91,88],"product":[95],"attack_vector":[76],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-33853","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-google","vendor-linux","product-linux-kernel","attack_vector-privilege-escalation"],"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