curl: When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a p...
CVE-2021-22945 is fixed in 4 products on 1 platform, first by curl 7.74.0-1.3ubuntu2, released September 14, 2021. It is not reported as exploited. Patch Radar priority: Routine.
When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 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*.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| curl · Ubuntu 22.04.1 LTS (jammy) | 7.74.0-1.3ubuntu2 | curl 7.74.0-1.3ubuntu2 | Sep 14, 2021 |
| libcurl3-gnutls · Ubuntu 22.04.1 LTS (jammy) | 7.74.0-1.3ubuntu2 | libcurl3-gnutls 7.74.0-1.3ubuntu2 | Sep 14, 2021 |
| libcurl3-nss · Ubuntu 22.04.1 LTS (jammy) | 7.74.0-1.3ubuntu2 | libcurl3-nss 7.74.0-1.3ubuntu2 | Sep 14, 2021 |
| libcurl4 · Ubuntu 22.04.1 LTS (jammy) | 7.74.0-1.3ubuntu2 | libcurl4 7.74.0-1.3ubuntu2 | Sep 14, 2021 |
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