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QSN-8685-1: bzip2 vulnerability
August 27, 2026
Summary
bzip2 could be made to crash if it processed a specially crafted archive.
Details
It was discovered that bzip2 did not properly manage memory under certain circumstances. An attacker could possibly use this issue to cause a crash, resulting in a denial of service.
Affected QuantaStor releases
| Release | Platform | Package | Exposure | Shipped version | Fixed version | Status |
|---|---|---|---|---|---|---|
| 6.9.1.001 | Ubuntu 22.04 LTS | bzip2 | Internally-facing | 1.0.8-5ubuntu0.1 | 1.0.8-5ubuntu0.1 | Fixed in this release |
| 6.9.1.001 | Ubuntu 22.04 LTS | libbz2-1.0 | Externally-facing | 1.0.8-5ubuntu0.1 | 1.0.8-5ubuntu0.1 | Fixed in this release |
| 6.9.0.464 | Ubuntu 22.04 LTS | bzip2 | Internally-facing | 1.0.8-5ubuntu0.1 | 1.0.8-5ubuntu0.1 | Fixed in this release |
| 6.9.0.464 | Ubuntu 22.04 LTS | libbz2-1.0 | Externally-facing | 1.0.8-5ubuntu0.1 | 1.0.8-5ubuntu0.1 | Fixed in this release |
| 6.8.6.015 | Ubuntu 22.04 LTS | bzip2 | Internally-facing | 1.0.8-5ubuntu0.1 | 1.0.8-5ubuntu0.1 | Fixed in this release |
| 6.8.6.015 | Ubuntu 22.04 LTS | libbz2-1.0 | Externally-facing | 1.0.8-5ubuntu0.1 | 1.0.8-5ubuntu0.1 | Fixed in this release |
| 6.8.5.018 | Ubuntu 22.04 LTS | bzip2 | Internally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.5.018 | Ubuntu 22.04 LTS | libbz2-1.0 | Externally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | bzip2 | Internally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | libbz2-1.0 | Externally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | bzip2 | Internally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | libbz2-1.0 | Externally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | bzip2 | Internally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | libbz2-1.0 | Externally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | bzip2 | Internally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | libbz2-1.0 | Externally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | bzip2 | Internally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | libbz2-1.0 | Externally-facing | 1.0.8-5build1 | 1.0.8-5ubuntu0.1 | 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-8685-1
https://nvd.nist.gov/vuln/detail/CVE-2026-42250
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 | bzip2 | 1.0.6-8.1ubuntu0.2+esm1 |
| Ubuntu 20.04 LTS | bzip2 | 1.0.8-2ubuntu0.1~esm1 |
| Ubuntu 22.04 LTS | bzip2 | 1.0.8-5ubuntu0.1 |
| Ubuntu 24.04 LTS | bzip2 | 1.0.8-5.1ubuntu0.1 |
| resolute | bzip2 | 1.0.8-6ubuntu0.1 |
| trusty | bzip2 | 1.0.6-5ubuntu0.1~esm3 |
| xenial | bzip2 | 1.0.6-8ubuntu0.2+esm1 |