Vulnerability in Kernel package: bcm: fix infoleak in struct bcm_msg_head
Summary
GSD-2021-1000993: can: bcm: fix infoleak in struct bcm_msg_head. Affects Kernel versions >= ffd980f976e7fd666c2e61bf8ab35107efd11828, < acb755be1f7adb204dcedc4d3b204ef098628623. No fix is published. How to fix ↓
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Background
The Kernel package is a critical component of the Linux operating system. It provides the core functionality and interfaces for various hardware devices and software components. The bcm module within the Kernel package is responsible for handling communication with Broadcom Ethernet switches. It utilizes the struct bcm_msg_head data structure for message handling. However, a vulnerability has been discovered in this data structure that can lead to an information leak.
Vulnerability Detail
The vulnerability in struct bcm_msg_head allows an attacker to leak sensitive information from the kernel memory. By exploiting this flaw, an attacker can gain access to potentially confidential data, such as encryption keys or user credentials. This can lead to further attacks, including privilege escalation or unauthorized access to sensitive systems. The vulnerability was introduced in version v2.6.25 of the Linux Kernel and has been fixed in version v5.10.46.
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. It is advised to apply the recommended fix by updating the Linux Kernel package.
Conclusion
The vulnerability in struct bcm_msg_head of the Kernel package can lead to an information leak, potentially resulting in unauthorized access or privilege escalation. It is crucial to update the Linux Kernel package to version v5.10.46 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The vulnerability allows an attacker to leak sensitive information from the kernel memory, potentially leading to unauthorized access or privilege escalation.
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 it will provide real-time alerts for open-source vulnerabilities.
At the time of this report, there are no known public exploits for this vulnerability. However, it is important to apply the recommended fix to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely if the affected system is accessible over a network connection.
For more details about this vulnerability, you can refer to the source information provided by the Cloud Security Alliance's GSD database: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000993.json
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