VDB
ALPINE-CVE-2021-22945
ALPINE-CVE-2021-22945
PUBLISHED
CVSS 9.100000381469727 CRITICAL
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*.
Risk Scores
CVSS 3.1
9.100000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.21 | curl | 7.62.0-r1, 7.52.1-r1, 7.42.1-r0 |
| Alpine:v3.11 | curl | 0, 7.21.7-r1, 7.50.0-r0 |
| Alpine:v3.13 | curl | 7.21.3-r0, 7.21.2-r0, 7.21.1-r0 |
| Alpine:v3.15 | curl | 7.19.4-r0, 7.19.5-r0, 7.19.6-r0 |
| Alpine:v3.19 | curl | 7.42.1-r1, 7.51.0-r1, 7.29.0-r0 |
| Alpine:v3.22 | curl | 7.21.7-r2, 7.21.4-r0, 7.65.0-r0 |
| Alpine:v3.17 | curl | 7.21.6-r0, 0, 7.19.2-r0 |
| Alpine:v3.18 | curl | 7.68.0-r0, 7.57.0-r0, 7.21.7-r2 |
| Alpine:v3.16 | curl | 7.78.0-r1, 0, 7.19.2-r0 |
| Alpine:v3.20 | curl | 7.21.2-r0, 7.65.3-r0, 7.70.0-r2 |
| Alpine:v3.24 | curl | 0 |
| Alpine:v3.14 | curl | 7.21.5-r0, 0, 7.19.2-r0 |
| Alpine:v3.23 | curl | 7.21.1-r0, 7.77.0-r1, 7.77.0-r0 |
| Alpine:v3.12 | curl | 7.19.2-r1, 7.19.4-r0, 7.19.5-r0 |
Timeline
- Sep 23, 2021 CVE Published
- Jun 15, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch