Skip to main content

Integer Overflow or Wraparound

CVE-2021-3607

Medium
6/10

Summary

An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to v6.1.0-rc0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

  • LOW
  • LOCAL
  • NONE
  • CHANGED
  • NONE
  • HIGH
  • NONE
  • HIGH

CWE-190 - Integer Overflow or Wraparound

The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.

References

Advisory Timeline

  • Published