Red Hat Security Advisory: postgresql16 security update

Fixed packages 30

Vulnerabilities 4

• High 8.8
  CVE-2026-2004

  PostgreSQL intarray missing validation of type of input to selectivity estimator executes arbitrary code

  Missing validation of type of input in PostgreSQL intarray extension selectivity estimator function allows an object creator to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and …

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Feb 12, 2026
• High 8.8
  CVE-2026-2005 Public exploit

  PostgreSQL pgcrypto heap buffer overflow executes arbitrary code

  Heap buffer overflow in PostgreSQL pgcrypto allows a ciphertext provider to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Feb 12, 2026
• High 8.8
  CVE-2026-2006

  PostgreSQL missing validation of multibyte character length executes arbitrary code

  Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database. Versions…

  rust postgresql-9.3 postgresql15 postgresql-9.5 Debian Ubuntu Azure Linux Alpine Wolfi
  Feb 12, 2026
• Medium 4.3
  CVE-2026-2003

  PostgreSQL oidvector discloses a few bytes of memory

  Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely.…

  postgresql-9.3 postgresql15 postgresql-9.5 postgresql-10 Debian Ubuntu Azure Linux Alpine Wolfi
  Feb 12, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439322
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439324
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439325
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2439326
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_4441.json
• report
  https://access.redhat.com/security/cve/CVE-2026-2003
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-2003
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-2003
• article
  https://www.postgresql.org/support/security/CVE-2026-2003/
• report
  https://access.redhat.com/security/cve/CVE-2026-2004
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-2004
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-2004
• article
  https://www.postgresql.org/support/security/CVE-2026-2004/
• report
  https://access.redhat.com/security/cve/CVE-2026-2005
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-2005
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-2005
• article
  https://www.postgresql.org/support/security/CVE-2026-2005/
• report
  https://access.redhat.com/security/cve/CVE-2026-2006
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-2006
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-2006
• article
  https://www.postgresql.org/support/security/CVE-2026-2006/