UAF Vulnerability in net: qcom/emac
Summary
GSD-2021-1001260: net: qcom/emac: fix UAF in emac_remove. Affects Kernel versions >= 54e19bc74f3380d414681762ceed9f7245bc6a6e, < b560521eca03d0a2db6093a5a632cbdd0a0cf833. No fix is published. How to fix ↓
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Background
The net: qcom/emac package is a component of the Linux Kernel, which is responsible for managing the Qualcomm Ethernet MAC (Media Access Control) driver. This driver enables communication between the Qualcomm Ethernet controller and the operating system. The qcom/emac driver is utilized in various Qualcomm SoCs (System on Chips) to provide Ethernet connectivity. However, a Use-After-Free (UAF) vulnerability has been identified in the emac_remove function of the qcom/emac driver.
Vulnerability Detail
The UAF vulnerability in the emac_remove function of the qcom/emac driver allows an attacker to exploit a use-after-free condition. This occurs when the driver attempts to access memory that has already been freed. By manipulating the timing of specific operations, an attacker can trigger this vulnerability and potentially execute arbitrary code or cause a denial-of-service (DoS) condition. The impact and attack plausibility of this vulnerability have not been proven yet.
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
The UAF vulnerability in the net: qcom/emac package of the Linux Kernel can potentially lead to arbitrary code execution or a denial-of-service (DoS) condition. It is crucial to update the Linux Kernel to version v5.10.53 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, if successfully exploited, it could lead to arbitrary code execution or a denial-of-service (DoS) condition.
You can use the Vulert 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 alert you in real-time if your system is vulnerable.
Yes, a patch for this vulnerability is available in the Linux Kernel version v5.10.53. It is recommended to update your system to this version or later to fix the vulnerability.
The remote exploitability of this vulnerability has not been determined yet. Further analysis is required to assess the potential for remote exploitation.
There are no known instances of this vulnerability being exploited in the wild. However, it is always recommended to apply security patches and updates to mitigate potential risks.
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