Horizon Alert
Summary of the vulnerability and why it matters
The Arm Mali GPU kernel driver has a vulnerability that allows unauthorized users to access freed memory. This flaw can lead to the disclosure of sensitive information or grant elevated system privileges. The issue impacts various versions of the Bifrost, Valhall, and Midgard GPU kernel drivers.
- Vulnerable Arm Mali GPU kernel drivers
- Access to freed memory
- Information disclosure or privilege escalation
Attack Path
How an attacker could exploit the issue
This vulnerability arises from a flaw in the Arm Mali GPU kernel driver. An unprivileged user could exploit this flaw to gain access to memory that has already been freed. This access could potentially lead to the disclosure of sensitive information or the escalation of privileges to the root level. The attack path involves an attacker gaining initial access and then triggering the vulnerability to gain greater control over the affected system.
- Unprivileged user access to system.
- Attacker triggers memory access flaw.
- Control or information disclosure results.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability affects Arm's Mali GPU kernel drivers. Exploitation could allow an unprivileged user to access freed memory, potentially leading to information disclosure or escalation to root privileges. The impact on an organization could include unauthorized access to sensitive data and a complete compromise of affected systems. Given the potential for privilege escalation and data exposure, this presents a significant business risk.
- Likely attacker skill: Moderate
- Required access: Local system access
- Business risk: High
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability within the Arm Mali GPU kernel driver could permit an unprivileged user to access freed memory, potentially leading to information disclosure or root privilege escalation. This risk affects specific versions of the Bifrost, Valhall, and Midgard GPU kernel drivers. Organizations should take immediate action to understand their exposure and mitigate potential impact.
- Identify affected Arm Mali GPU kernel drivers.
- Reduce exposure or isolate systems.
- Apply vendor fixes and validate.
- Monitor for related issues.
