Memory Leak Vulnerability in bpf, s390 Kernel Package
Summary
GSD-2021-1001684: bpf, s390: Fix potential memory leak about jit_data. Affects Kernel versions >= 1c8f9b91c456f5b47a377a0c8c5d4130fc39433a, < d590a410e472417a22336c7c37685bfb38e801f2. No fix is published. How to fix ↓
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Background
The bpf, s390 package is a component of the Linux Kernel that provides support for Berkeley Packet Filters (BPF) and the s390 architecture. BPF is a virtual machine in the kernel that allows user-defined programs to be executed in a safe and efficient manner. The s390 architecture is used in IBM mainframe computers. This package is responsible for handling BPF programs and executing them on the s390 architecture.
Vulnerability Detail
The vulnerability identified in the bpf, s390 package is related to a potential memory leak concerning jit_data. If exploited, this vulnerability could lead to memory exhaustion and impact system performance. An attacker may be able to craft malicious BPF programs that trigger the memory leak, potentially leading to a denial-of-service condition or other security issues. The vulnerability was introduced in version v5.4 of the Linux Kernel and has been fixed in version v5.14.12.
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. However, users can mitigate the risk by ensuring they have the latest security updates installed and by following best practices for system hardening and network security.
Conclusion
In conclusion, the bpf, s390 package in the Linux Kernel is vulnerable to a memory leak issue related to jit_data. This vulnerability can lead to memory exhaustion and potential security risks. It is crucial to update the Linux Kernel to version v5.14.12 or later to mitigate this vulnerability. Regularly applying security updates and following best practices for system hardening are also recommended. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
If exploited, this vulnerability could lead to memory exhaustion and impact system performance. It may also allow attackers to craft malicious BPF programs that trigger the memory leak, potentially leading to a denial-of-service condition or other security issues.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this memory leak vulnerability in the bpf, s390 package.
Yes, the vulnerability has been fixed in version v5.14.12 of the Linux Kernel. It is recommended to update to this version or a later one to ensure the vulnerability is addressed.
There are no known exploits for this vulnerability at the time of this report. However, it is important to apply the necessary updates and security patches to mitigate the risk.
You can find more information about this vulnerability in the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and the Cloud Security Alliance GSD Database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001684.json).
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