Buffer Overflow Vulnerability in Linux Kernel's MMC Core - CVE-2022-49267
Summary
CVE-2022-49267: In the Linux kernel, the following vulnerability has been resolved: mmc: core: use sysfs_emit() instead of sprintf() sprintf() (still used in the MMC core for the sysfs output) is vulnerable to the buffer overflow. Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, providing essential services for hardware and software interaction. It is known for its stability, performance, and flexibility. The MMC (MultiMediaCard) core is a subsystem within the Linux kernel that manages memory cards. This subsystem is critical for devices that rely on external storage, making it a vital part of the kernel's functionality. The vulnerability identified as CVE-2022-49267 pertains to the use of the 'sprintf()' function in the MMC core, which is susceptible to buffer overflow attacks.
Vulnerability Detail
CVE-2022-49267 is a vulnerability found in the Linux kernel's MMC core, where the 'sprintf()' function is used for sysfs output. This function is known to be vulnerable to buffer overflow, which can lead to potential data corruption, crashes, or even arbitrary code execution. The vulnerability was discovered by the Linux Verification Center using the SVACE static analysis tool. The risk associated with this vulnerability is significant, as it could allow an attacker to exploit the system through specially crafted input, compromising the integrity and security of the operating system.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, no specific workarounds have been mentioned for this vulnerability. The best course of action is to apply the patch as soon as it becomes available.
Conclusion
CVE-2022-49267 is a critical vulnerability in the Linux kernel's MMC core that poses significant risks due to buffer overflow. It is essential to update to the patched version to safeguard your system against potential exploits. Regular monitoring and timely updates are vital for maintaining system security.
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FAQ
CVE-2022-49267 is a vulnerability in the Linux kernel's MMC core that involves a buffer overflow due to the use of 'sprintf()' for sysfs output.
This vulnerability can lead to data corruption, crashes, or arbitrary code execution, potentially compromising the security of your system.
Yes, a patch is available in version 5.17.3-1 and later for the affected Linux packages.
You can use tools like Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
While there are no specific workarounds, it is crucial to prioritize updating your system to mitigate the risk associated with this vulnerability.
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