Linux Kernel - Denial of Service and Privilege Escalation
Summary
DSA-2949-1: linux - security update. Affects linux versions < 3.2.57-3+deb7u2. Fixed in 3.2.57-3+deb7u2. How to fix ↓
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Background
The Linux kernel is the core component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionality for the Debian 7 (Wheezy) distribution. However, several vulnerabilities have been discovered in the Linux kernel that could lead to a denial of service or privilege escalation.
Vulnerability Detail
The first vulnerability, identified as CVE-2014-3144 and CVE-2014-3145, allows a local user to cause a denial of service by exploiting crafted BPF instructions. The second vulnerability, CVE-2014-3153, was discovered by Pinkie Pie and affects the futex subsystem. It enables a local user to gain ring 0 control via the futex syscall, potentially leading to privilege escalation or kernel crashes.
How To Fix
Minimum fixed version
3.2.57-3+deb7u2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
No specific workarounds have been mentioned for these vulnerabilities.
Conclusion
The Linux kernel vulnerabilities (CVE-2014-3144, CVE-2014-3145, CVE-2014-3153) pose a risk of denial of service and privilege escalation. It is crucial to upgrade the linux package to version 3.2.57-3+deb7u2 for the Debian 7 (Wheezy) distribution to mitigate these vulnerabilities. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerabilities can result in denial of service (system crash) or privilege escalation, potentially allowing unauthorized access to sensitive system resources.
CVE-2014-3144 and CVE-2014-3145 were discovered by undisclosed researchers, while CVE-2014-3153 was discovered by Pinkie Pie.
The vulnerabilities impact the Linux kernel used in the Debian 7 (Wheezy) distribution. Other Linux distributions or kernel versions may have different levels of vulnerability.
Detailed information about known exploits has not been provided. However, it is important to apply the recommended security update to mitigate the risks.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) to the playground and it will provide real-time alerts for open-source vulnerabilities.
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