In the Linux kernel, a vulnerability has been resolved that can lead to information leakage through the vmci_host_do_receive_datagram(). The vulnerability arises from an uninitialized data exposure due to padding in the `struct vmci_event_qp` allocated by qp_notify_peer(), potentially allowing attackers to read sensitive data. The issue was observed by KMSAN, which reported kernel-infoleak errors.
The vulnerability has a CVSS score of 5.5, categorizing it as medium severity. It is classified under CWE-908, which refers to the exposure of sensitive information to an unauthorized actor.
Organizations utilizing affected Linux kernel versions should prioritize patching to mitigate risks associated with potential exploitation. Failure to address this vulnerability may lead to unauthorized access to sensitive data.
The vulnerability was published on May 1, 2025, and has been analyzed thoroughly. It is important for security teams to stay updated with the latest patches and security advisories.
Vulnerability Details
The vulnerability in question allows for information exposure due to uninitialized data being copied to user space. The specific function affected is vmci_host_do_receive_datagram(), and the issue is characterized as a kernel information leak. The patch has been implemented to prevent this type of leak by ensuring proper initialization of the data structure.
The CVSS score reflects a medium severity level, indicating that while the vulnerability can lead to significant issues, it requires local access for exploitation, thus limiting its immediate risk.
Technical Analysis
The root cause of this vulnerability is the improper handling of uninitialized data within the Linux kernel's memory management routines. The attack vector is considered local, requiring low privileges to exploit, making it accessible to users with limited access rights.
Risk & Impact Analysis
Risk to organizations includes potential data exposure and unauthorized access to sensitive information. The blast radius is particularly concerning for systems that handle sensitive data, as uninitialized memory may inadvertently reveal critical information.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects the Linux kernel versions from 3.9 to prior to 4.9.334, and similar ranges up to the latest release candidates of 6.1. Organizations should review their kernel versions for compliance.
Mitigation & Remediation
Organizations should prioritize patching the affected Linux kernel versions immediately. The recommended action is to update to the latest stable release that includes the patch for CVE-2022-49788. Additional security measures, such as implementing strict access controls, can help mitigate potential risks.
Detection Guidance
Monitor system logs for any unusual access patterns or attempts to exploit the kernel vulnerabilities. Look for indicators of compromise that may suggest an attempt to exploit this vulnerability.
AppSecure Threat Intelligence Insight
As the threat landscape evolves, vulnerabilities like CVE-2022-49788 highlight the importance of continuous monitoring and patch management. Security teams are encouraged to implement a vulnerability management program to ensure timely updates and effective incident response.
Additionally, leveraging services such as penetration testing can help identify and remediate potential vulnerabilities before they can be exploited.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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