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Integer Overflow or Wraparound

CVE-2021-31873

High
7.5/10

Summary

An issue was discovered in klibc before 2.0.9. Additions in the malloc() function may result in an integer overflow and a subsequent heap buffer overflow.

  • LOW
  • NETWORK
  • NONE
  • PARTIAL
  • PARTIAL
  • PARTIAL

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