Critical Vulnerability in Linux Kernel Packages: CVE-2019-12454
Summary
UBUNTU-CVE-2019-12454: An issue was discovered in wcd9335_codec_enable_dec in sound/soc/codecs/wcd9335.c in the Linux kernel through 5.1.5. Affects linux versions 3.11.0-12.19 – 3.13.0-98.145. No fix is published. How to fix ↓
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Background
The Linux kernel is the core component of the Linux operating system, responsible for managing hardware resources and providing essential services to applications. It supports a wide range of functionalities, including process management, memory management, and device control. The vulnerability CVE-2019-12454 affects various Linux kernel packages, particularly those in Ubuntu 14.04 LTS, which are widely used in server and cloud environments.
Vulnerability Detail
CVE-2019-12454 is a vulnerability found in the wcd9335_codec_enable_dec function within the sound subsystem of the Linux kernel. The issue arises from the use of kstrndup instead of kmemdup_nul, which could allow attackers to exploit unspecified vectors, potentially leading to unauthorized access or system compromise. The vendor has disputed the severity of this issue, claiming that the source string is expected to be NUL-terminated, thus minimizing the risk.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If immediate patching is not feasible, consider implementing strict access controls and monitoring to limit exposure to potential attacks. Additionally, ensure that your system is regularly audited for any unusual activities.
Conclusion
CVE-2019-12454 is a significant vulnerability affecting various Linux kernel packages, particularly in Ubuntu 14.04 LTS. It is crucial to update the affected packages to their patched versions to mitigate potential risks. Users should also consider using tools like Vulert to monitor for vulnerabilities in their software.
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FAQ
CVE-2019-12454 is a vulnerability in the Linux kernel that could allow attackers to exploit unspecified vectors due to improper handling of strings in the sound subsystem.
You can use Vulert, which monitors open-source vulnerabilities in your software. Simply upload your manifest file like package-lock.json to check for vulnerabilities.
The CVSS score for CVE-2019-12454 is 7.8, indicating a high severity level.
Yes, patches are available for the affected Linux kernel packages. It is recommended to update to the latest versions to mitigate the risk.
If you cannot apply the patch right away, implement strict access controls and monitor your system for any suspicious activities to reduce the risk of exploitation.
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