<p>Upgrade <code>Debian:11</code> <code>curl</code> to version 7.74.0-1.3+deb11u2 or higher.</p>

Double Free Affecting curl package, versions <7.74.0-1.3+deb11u2

Snyk CVSS

Attack Complexity Low

Confidentiality High

Availability High

Threat Intelligence

EPSS 0.28% (64^th percentile)

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Snyk ID SNYK-DEBIAN11-CURL-1585150
published 15 Sep 2021
disclosed 23 Sep 2021

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Introduced: 15 Sep 2021

CVE-2021-22945 Open this link in a new tab CWE-415 Open this link in a new tab

How to fix?

Upgrade Debian:11 curl to version 7.74.0-1.3+deb11u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Debian:11. See How to fix? for Debian:11 relevant fixed versions and status.

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.