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QSN-8697-1: GNU Core Utilities vulnerabilities
August 31, 2026
Summary
Several security issues were fixed in GNU Core Utilities.
Details
It was discovered that GNU Core Utilities sort had a heap buffer under-read in its begfield() function. A local attacker could possibly use this issue to cause GNU Core Utilities to crash, resulting in a denial of service, or obtain sensitive information. (CVE-2025-5278)
It was discovered that GNU Core Utilities uniq had an out-of-bounds read when the -w option was used with crafted multibyte input. A local attacker could possibly use this issue to cause GNU Core Utilities to crash, resulting in a denial of service, or obtain sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-56391)
Affected QuantaStor releases
| Release | Platform | Package | Exposure | Shipped version | Fixed version | Status |
|---|---|---|---|---|---|---|
| 6.9.1.001 | Ubuntu 22.04 LTS | coreutils | Internally-facing | 8.32-4.1ubuntu1.2 | 8.32-4.1ubuntu1.4 | Fixed by QuantaStor security update |
| 6.9.0.464 | Ubuntu 22.04 LTS | coreutils | Internally-facing | 8.32-4.1ubuntu1.2 | 8.32-4.1ubuntu1.4 | Fixed by QuantaStor security update |
| 6.8.6.015 | Ubuntu 22.04 LTS | coreutils | Internally-facing | 8.32-4.1ubuntu1.2 | 8.32-4.1ubuntu1.4 | Fixed by QuantaStor security update |
| 6.8.5.018 | Ubuntu 22.04 LTS | coreutils | Internally-facing | 8.32-4.1ubuntu1.2 | 8.32-4.1ubuntu1.4 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | coreutils | Internally-facing | 8.32-4.1ubuntu1.2 | 8.32-4.1ubuntu1.4 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | coreutils | Internally-facing | 8.32-4.1ubuntu1.2 | 8.32-4.1ubuntu1.4 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | coreutils | Internally-facing | 8.32-4.1ubuntu1.2 | 8.32-4.1ubuntu1.4 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | coreutils | Internally-facing | 8.32-4.1ubuntu1.2 | 8.32-4.1ubuntu1.4 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | coreutils | Internally-facing | 8.32-4.1ubuntu1.2 | 8.32-4.1ubuntu1.4 | 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-8697-1
https://nvd.nist.gov/vuln/detail/CVE-2025-5278
https://nvd.nist.gov/vuln/detail/CVE-2026-56391
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 |
|---|---|---|
| Ubuntu 22.04 LTS | coreutils | 8.32-4.1ubuntu1.4 |
| Ubuntu 24.04 LTS | coreutils | 9.4-3ubuntu6.3 |
| resolute | coreutils | 9.7-3ubuntu2.1 |