Double Free Vulnerability in rpmsg: virtio

Kernel Updated 02 Oct 2025

Summary

28/06/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1003291: rpmsg: virtio: Fix possible double free in rpmsg_virtio_add_ctrl_dev(). Affects Kernel versions >= c486682ae1e2b149add22f44cf413b3103e3ef39, < b94d40c792de7f0ceda6a2fd8a8dc0597eca6d22. No fix is published. How to fix ↓

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Background

The rpmsg: virtio package is a component of the Linux Kernel that provides support for the Remote Processor Messaging (RPMsg) protocol over the VirtIO transport. RPMsg is a lightweight interprocessor communication framework used in embedded systems. The virtio driver allows communication between the host and guest operating systems in a virtualized environment. This vulnerability affects versions 5.13 to 5.15.46 of the Linux Kernel.

Vulnerability Detail

The rpmsg_virtio_add_ctrl_dev() function in the rpmsg: virtio package is susceptible to a double free vulnerability. This vulnerability was introduced in version 5.13 of the Linux Kernel and fixed in version 5.15.47. An attacker could exploit this vulnerability to cause a denial-of-service (DoS) condition or potentially execute arbitrary code. The vulnerability occurs when the function attempts to add a control device and encounters an error, leading to a double free of the device structure.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version 5.15.47 or later. This fix can be obtained by pulling the latest updates from the official Linux Kernel repository. Alternatively, users can apply the specific commit (b94d40c792de7f0ceda6a2fd8a8dc0597eca6d22) that addresses this issue.

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Workaround

No workaround has been provided for this vulnerability.

Conclusion

The double free vulnerability in rpmsg: virtio can potentially lead to a denial-of-service (DoS) condition or arbitrary code execution. It is crucial to update the Linux Kernel to version 5.15.47 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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