Use-after-free vulnerability in Linux kernel's dvbdev.c in Debian:10, Debian:11, Debian:12, and Debian:13
Summary
CVE-2022-45884: An issue was discovered in the Linux kernel through 6.0.9. 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 the Linux operating system. It provides essential functionality for the system, including device drivers, process management, memory management, and file system support. The dvbdev.c file in the drivers/media/dvb-core directory is responsible for handling DVB (Digital Video Broadcasting) devices. DVB is a set of standards for digital television transmission. This vulnerability specifically affects Debian versions 10, 11, 12, and 13.
Vulnerability Detail
The vulnerability identified as CVE-2022-45884 is a use-after-free vulnerability in the dvbdev.c file of the Linux kernel. This vulnerability occurs when the dvb_register_device function dynamically allocates file operations (fops) but fails to properly handle the deallocation of these resources. As a result, an attacker could exploit this vulnerability to execute arbitrary code or cause a denial-of-service condition. The severity of this vulnerability is rated as high, with a CVSS score of 7.0.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the Linux kernel in Debian versions 10, 11, 12, and 13 is vulnerable to a use-after-free vulnerability in the dvbdev.c file. This vulnerability could allow an attacker to execute arbitrary code or cause a denial-of-service condition. It is crucial to update the Linux kernel to the recommended version to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
This vulnerability could allow an attacker to execute arbitrary code or cause a denial-of-service condition on a system running the affected Linux kernel versions.
Debian versions 10, 11, 12, and 13 are affected by this vulnerability.
At the time of this report, there is no known exploit for this vulnerability.
The recommended mitigation is to update the Linux kernel to a version that includes the necessary patches.
You can find more information about this vulnerability in the CVE-2022-45884 entry on the National Vulnerability Database (NVD) website.
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