CVE-2022-23960: Speculative Target Reuse Attacks in Linux Kernel
Summary
CVE-2022-23960: In specific ARM processors, there is a possible side-channel information leak due to a hardware flaw. Affects :linux_kernel: versions >= :0, < :2022-12-05. Fixed in :2022-12-05. How to fix ↓
Also tracked for
- xen · Alpine:v3.12
The same CVE-2022-23960 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions, including Android. It provides essential functionality for managing system resources, hardware devices, and executing user programs. However, certain ARM processors used in the Linux Kernel are susceptible to a hardware flaw that can lead to speculative target reuse attacks. These attacks exploit a side-channel information leak, potentially resulting in local information disclosure without requiring additional execution privileges. This vulnerability does not require user interaction for exploitation.
Vulnerability Detail
The vulnerability arises from a hardware flaw present in specific ARM processors used in the Linux Kernel. By leveraging this flaw, an attacker can perform speculative target reuse attacks, which can lead to the disclosure of sensitive information. This information leak occurs through a side-channel, allowing an attacker to infer data that should be protected. The impact of this vulnerability can be significant, as it can expose confidential data without the need for elevated privileges or user interaction.
How To Fix
Minimum fixed version
:2022-12-05
This is the first release that contains the fix.
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Workaround
There is no specific workaround mentioned for this vulnerability. However, applying the recommended updates and patches as mentioned in the 'how_to_fix' section is the best course of action to mitigate the risk associated with this vulnerability.
Conclusion
The CVE-2022-23960 vulnerability in the Linux Kernel exposes systems to speculative target reuse attacks, leading to the potential disclosure of sensitive information. To mitigate this risk, it is crucial to update the Linux Kernel to a version that includes the necessary patches. For Android devices, updating to the latest security patch level should address this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can lead to the disclosure of sensitive information without requiring additional execution privileges or user interaction. It can potentially expose confidential data, posing a significant risk to affected systems.
No, user interaction is not needed for exploitation of this vulnerability. An attacker can exploit the hardware flaw to perform speculative target reuse attacks and leak sensitive information.
Systems using specific ARM processors in the Linux Kernel are affected by this vulnerability. This includes various Linux distributions and Android devices.
To protect your system, it is crucial to update the Linux Kernel to a version that includes the necessary patches. For Android devices, updating to the latest security patch level should address this vulnerability.
At the time of this report, there are no known public exploits specifically targeting this vulnerability. However, it is essential to apply the recommended updates and patches to mitigate the risk.
References
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