← All notices | Source (USN-8670-2) | Text version
QSN-8670-2: curl vulnerability
August 25, 2026
Summary
curl could be made to expose sensitive information.
Details
USN-8670-1 fixed a vulnerability in curl. This update provides the corresponding update for Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS.
Original advisory details:
Joshua Rogers discovered that curl incorrectly handled reusing connections when client certificate settings changed. This could result in the wrong client certificates being used, contrary to expectations.
Affected QuantaStor releases
| Release | Platform | Package | Exposure | Shipped version | Fixed version | Status |
|---|---|---|---|---|---|---|
| 6.9.1.001 | Ubuntu 22.04 LTS | curl | Internally-facing | 7.81.0-1ubuntu1.30 | 7.81.0-1ubuntu1.27 | Fixed in this release |
| 6.9.1.001 | Ubuntu 22.04 LTS | libcurl3-gnutls | Externally-facing | 7.81.0-1ubuntu1.30 | 7.81.0-1ubuntu1.27 | Fixed in this release |
| 6.9.1.001 | Ubuntu 22.04 LTS | libcurl4 | Internally-facing | 7.81.0-1ubuntu1.30 | 7.81.0-1ubuntu1.27 | Fixed in this release |
| 6.9.0.464 | Ubuntu 22.04 LTS | curl | Internally-facing | 7.81.0-1ubuntu1.30 | 7.81.0-1ubuntu1.27 | Fixed in this release |
| 6.9.0.464 | Ubuntu 22.04 LTS | libcurl3-gnutls | Externally-facing | 7.81.0-1ubuntu1.30 | 7.81.0-1ubuntu1.27 | Fixed in this release |
| 6.9.0.464 | Ubuntu 22.04 LTS | libcurl4 | Internally-facing | 7.81.0-1ubuntu1.30 | 7.81.0-1ubuntu1.27 | Fixed in this release |
| 6.8.6.015 | Ubuntu 22.04 LTS | curl | Internally-facing | 7.81.0-1ubuntu1.27 | 7.81.0-1ubuntu1.27 | Fixed in this release |
| 6.8.6.015 | Ubuntu 22.04 LTS | libcurl3-gnutls | Externally-facing | 7.81.0-1ubuntu1.27 | 7.81.0-1ubuntu1.27 | Fixed in this release |
| 6.8.6.015 | Ubuntu 22.04 LTS | libcurl4 | Internally-facing | 7.81.0-1ubuntu1.27 | 7.81.0-1ubuntu1.27 | Fixed in this release |
| 6.8.5.018 | Ubuntu 22.04 LTS | curl | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.5.018 | Ubuntu 22.04 LTS | libcurl3-gnutls | Externally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.5.018 | Ubuntu 22.04 LTS | libcurl4 | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | curl | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | libcurl3-gnutls | Externally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | libcurl4 | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | curl | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | libcurl3-gnutls | Externally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | libcurl4 | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | curl | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | libcurl3-gnutls | Externally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | libcurl4 | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | curl | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | libcurl3-gnutls | Externally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | libcurl4 | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | curl | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | libcurl3-gnutls | Externally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | libcurl4 | Internally-facing | 7.81.0-1ubuntu1.25 | 7.81.0-1ubuntu1.27 | Fixed by QuantaStor security update |
Internally-facing: only accessible when logged into the QuantaStor console/ssh as the qadmin administrative sudo user; generally lower priority. Externally-facing: part of a service the storage platform presents on the network (or the kernel), so potentially reachable over the network.
CVEs
References
https://ubuntu.com/security/notices/USN-8670-2
https://nvd.nist.gov/vuln/detail/CVE-2026-8932
Update
Fixes marked Fixed by QuantaStor security update are applied by upgrading QuantaStor with security patches included (Upgrade Manager). Fixed package versions:
| Platform | Package | Version |
|---|---|---|
| bionic | curl | 7.58.0-2ubuntu3.24+esm12 |
| Ubuntu 20.04 LTS | curl | 7.68.0-1ubuntu2.25+esm7 |
| Ubuntu 22.04 LTS | curl | 7.81.0-1ubuntu1.27 |