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OpenAdvisories
Low RHSA-2026:66403 1 CVE

Red Hat Security Advisory: coreutils security update

Published Sep 11, 2026 · Updated Oct 14, 2026

Ecosystem: Red Hat

Fixed packages 5

ReleasePackageFixed in
Red Hat · RHEL 9 enterprise_linux:9::baseos coreutils 0:8.32-41.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::baseos coreutils-debuginfo 0:8.32-41.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::baseos coreutils-debugsource 0:8.32-41.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::baseos coreutils-single 0:8.32-41.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::baseos coreutils-single-debuginfo 0:8.32-41.el9_8.1

Vulnerabilities 1

  • Low 1.8
    CVE-2026-56392

    Heap-based Buffer Overflow in GNU coreutils

    GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop (-t) values. The multiplication used to calculate the allocation size can wrap around, resulting in an unde…

    GNU coreutils coreutils Debian

References

  • article
    https://access.redhat.com/security/updates/classification/#moderate
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2506694
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_66403.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-56392
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-56392
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-56392
  • article
    https://cert.pl/en/posts/2026/07/CVE-2026-56391
  • article
    https://git.savannah.gnu.org/cgit/coreutils.git/
  • article
    https://git.savannah.gnu.org/cgit/coreutils.git/commit/?id=b60a159fdc5bfcf9988d3a4cb6f53abe8ad5d35d