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Use After Free


Severity High
Score 7.5/10


A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq versions prior to 2.87rc1 . This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.

  • LOW
  • NONE
  • NONE
  • NONE
  • 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.

Advisory Timeline

  • Published