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Use After Free

CVE-2020-27418

Medium
4.4/10

Summary

A Use After Free vulnerability in Fedora Linux kernel 5.9.0-rc9 allows attackers to obatin sensitive information via vgacon_invert_region() function.

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

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