QSN-8697-1: GNU Core Utilities vulnerabilities
2026-08-31

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:
  6.9.1.001 jammy: coreutils 8.32-4.1ubuntu1.2 (fixed in 8.32-4.1ubuntu1.4)
  6.9.0.464 jammy: coreutils 8.32-4.1ubuntu1.2 (fixed in 8.32-4.1ubuntu1.4)
  6.8.6.015 jammy: coreutils 8.32-4.1ubuntu1.2 (fixed in 8.32-4.1ubuntu1.4)
  6.8.5.018 jammy: coreutils 8.32-4.1ubuntu1.2 (fixed in 8.32-4.1ubuntu1.4)
  6.8.4.038 jammy: coreutils 8.32-4.1ubuntu1.2 (fixed in 8.32-4.1ubuntu1.4)
  6.8.3.018 jammy: coreutils 8.32-4.1ubuntu1.2 (fixed in 8.32-4.1ubuntu1.4)
  6.8.2.002 jammy: coreutils 8.32-4.1ubuntu1.2 (fixed in 8.32-4.1ubuntu1.4)
  6.8.1.007 jammy: coreutils 8.32-4.1ubuntu1.2 (fixed in 8.32-4.1ubuntu1.4)
  6.8.0.205 jammy: coreutils 8.32-4.1ubuntu1.2 (fixed in 8.32-4.1ubuntu1.4)

CVEs: CVE-2025-5278, CVE-2026-56391

References:
  https://ubuntu.com/security/notices/USN-8697-1