CVE-2019-15117 : Vulnerability Insights and Analysis
Learn about CVE-2019-15117, a Linux kernel vulnerability allowing unauthorized memory access. Find mitigation steps and long-term security practices to safeguard systems.
The parse_audio_mixer_unit function in the Linux kernel through version 5.2.9 has a vulnerability that allows accessing memory beyond permissible bounds.
Understanding CVE-2019-15117
This CVE involves mishandling a truncated descriptor in the Linux kernel, leading to out-of-bounds memory access.
What is CVE-2019-15117?
The vulnerability in the parse_audio_mixer_unit function of the Linux kernel allows an attacker to access memory beyond the allowed limits by exploiting a specific issue in handling truncated descriptors.
The Impact of CVE-2019-15117
The vulnerability can be exploited to trigger out-of-bounds memory access, potentially leading to a denial of service (DoS) or arbitrary code execution.
Technical Details of CVE-2019-15117
The technical aspects of the CVE provide insight into the vulnerability's description, affected systems, versions, and exploitation mechanism.
Vulnerability Description
The parse_audio_mixer_unit function in sound/usb/mixer.c in the Linux kernel through 5.2.9 mishandles a short descriptor, resulting in out-of-bounds memory access.
Affected Systems and Versions
- Affected System: Linux kernel through version 5.2.9
- Affected Version: parse_audio_mixer_unit function
Exploitation Mechanism
The vulnerability is exploited by manipulating a truncated descriptor, allowing unauthorized access to memory beyond the intended boundaries.
Mitigation and Prevention
Protecting systems from CVE-2019-15117 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the Linux kernel maintainers promptly.
- Monitor official sources for updates and advisories related to the CVE.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Conduct regular security assessments and audits to identify vulnerabilities proactively.
- Educate users and administrators about secure coding practices and the importance of timely updates.
- Employ intrusion detection systems to detect and respond to potential exploitation attempts.
Patching and Updates
- Stay informed about security updates and patches released by the Linux kernel community.
- Ensure timely application of patches to mitigate the risk of exploitation and enhance system security.