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Use After Free

CVE-2021-36980

Medium
5.5/10

Summary

Open vSwitch (aka "openvswitch") 2.11.0 before 2.11.7, 2.12.0 before 2.12.4, 2.13.0 before 2.13.4, 2.14.0 before 2.14.3, and 2.15.0, has a Use-After-Free in "decode_NXAST_RAW_ENCAP" (called from "ofpact_decode" and "ofpacts_decode") during the decoding of a "RAW_ENCAP" action.

  • LOW
  • LOCAL
  • NONE
  • UNCHANGED
  • REQUIRED
  • 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.

References

Advisory Timeline

  • Published