Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Fixed packages 3

Vulnerabilities 2

• Low 2.5
  CVE-2026-18739

  Popt-devel: popt-static: off-by-one in poptstuffargs

  A flaw was found in popt, a command-line option parsing library. An off-by-one error in the poptStuffArgs function, when repeatedly called by a host application or through deep alias nesting, can lead to corruption of internal program data. This corruption co…

  Red Hat rpm-software-management Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Linux Debian Ubuntu Azure Linux
  Aug 4, 2026
• Low 2.5
  CVE-2026-18743

  Popt-devel: popt-static: short realloc in poptconfigfiletostring

  A flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of an error in how the `poptConfigFileToString` …

  Red Hat rpm-software-management Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Linux Debian Ubuntu Azure Linux
  Sep 1, 2026

References

• report
  https://access.redhat.com/security/cve/CVE-2026-18739
• report
  https://access.redhat.com/security/cve/CVE-2026-18743
• article
  https://access.redhat.com/security/updates/classification/
• article
  https://images.redhat.com/
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_56984.json
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2510737
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-18739
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-18739
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2510809
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-18743
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-18743