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Use After Free

CVE-2022-0216

Medium
4.4/10

Summary

A use-after-free vulnerability was found in the LSI53C895A SCSI Host Bus Adapter emulation of QEMU versions prior to 7.1.0-rc0. The flaw occurs while processing repeated messages to cancel the current SCSI request via the "lsi_do_msgout" function. This flaw allows a malicious privileged user within the guest to crash the QEMU process on the host, resulting in a denial of service.

  • LOW
  • LOCAL
  • NONE
  • UNCHANGED
  • NONE
  • HIGH
  • NONE
  • HIGH

CWE-416 - Use After Free

Use-after-free (UaF) vulnerability occurs when the application is using a pointer to memory that has been freed. Any attempt to read/write to a buffer after it is de-allocated allows memory corruption, sensitive information exposure, and can potentially lead to arbitrary code execution.

References

Advisory Timeline

  • Published