Bug 2001527 (CVE-2021-22945) - CVE-2021-22945 curl: use-after-free and double-free in MQTT sending
Summary: CVE-2021-22945 curl: use-after-free and double-free in MQTT sending
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2021-22945
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2001541 2004362 2004647
Blocks: 2001529
TreeView+ depends on / blocked
 
Reported: 2021-09-06 10:02 UTC by Dhananjay Arunesh
Modified: 2022-11-23 05:47 UTC (History)
41 users (show)

Fixed In Version: curl-7.79.0
Clone Of:
Environment:
Last Closed: 2022-05-17 13:16:53 UTC
Embargoed:

Attachments (Terms of Use)

Description Dhananjay Arunesh 2021-09-06 10:02:37 UTC 
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*.
Comment 5 gkamathe 2021-09-15 06:27:18 UTC 
Created curl tracking bugs for this issue:

Affects: fedora-all [bug 2004362]
Comment 7 ayambast 2021-09-28 06:47:16 UTC 
Marking dotnetv3.1 as NOT affected and closing its tracker as it uses curl v7.61 that isn't affected by this CVE.
Comment 9 Product Security DevOps Team 2022-05-17 13:16:50 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-22945
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