CVE-2021-22945: Double Free

September 23, 2021 (updated November 7, 2023)

When sending data to an MQTT server, libcurl could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it again.

References

nvd.nist.gov/vuln/detail/CVE-2021-22945

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