CVE-2021-22945

Published: Sep 23, 2021

Modified: Jun 9, 2025

PUBLISHED

Description

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*.

Vendor	Product	Versions
n/a	https://github.com/curl/curl	affected `curl 7.73.0 to and including 7.78.0`

Weaknesses (CWE)

CWE-415

References

https://hackerone.com/reports/1269242

FEDORA-2021-fc96a3a749

vendor-advisory

https://www.oracle.com/security-alerts/cpuoct2021.html

https://security.netapp.com/advisory/ntap-20211029-0003/

FEDORA-2021-1d24845e93

vendor-advisory

https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf

https://support.apple.com/kb/HT213183

20220314 APPLE-SA-2022-03-14-4 macOS Monterey 12.3

mailing-list

DSA-5197

vendor-advisory

GLSA-202212-01

vendor-advisory

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CVE-2021-22945

Description

Affected Products

Weaknesses (CWE)

References