CVE-2021-38160

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.13.4

Description The issue is caused by a buffer overflow on the stack in the drivers/char/virtio console.c file of the Linux kernel. An untrusted device can trigger data corruption or loss by supplying a buf->len value that exceeds the buffer size. The length validation was added for robustness in the face of anomalous host OS behavior.

Recommendations For Linux kernel versions prior to 5.13.4, update to version 5.13.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the virtio console module to minimize the risk of exploitation.