CVE-2021-22945
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
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*.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-22945.html
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-22945
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 7.79.0-1 | |
| debian | bookworm | fixed | 7.79.1-1 |
| debian | bullseye | fixed | 7.74.0-1.3+deb11u2 |
| debian | forky | fixed | 7.79.1-1 |
| debian | sid | fixed | 7.79.1-1 |
| debian | trixie | fixed | 7.79.1-1 |
| sles | affected | |
References
Verify integrity in audit chain (admin only). AS-IS.