Skip to content
OpenAdvisories
High RHSA-2026:20334 4 CVEs

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Published May 22, 2026 · Updated Oct 12, 2026

Ecosystem: Red Hat

Fixed packages 7

ReleasePackageFixed in
Red Hat · Hardened Images 1 hummingbird:1 bind 0:9.18.49-1.hum1
Red Hat · Hardened Images 1 hummingbird:1 bind-chroot 0:9.18.49-1.hum1
Red Hat · Hardened Images 1 hummingbird:1 bind-devel 0:9.18.49-1.hum1
Red Hat · Hardened Images 1 hummingbird:1 bind-dnssec-utils 0:9.18.49-1.hum1
Red Hat · Hardened Images 1 hummingbird:1 bind-doc 0:9.18.49-1.hum1
Red Hat · Hardened Images 1 hummingbird:1 bind-libs 0:9.18.49-1.hum1
Red Hat · Hardened Images 1 hummingbird:1 bind-utils 0:9.18.49-1.hum1

Vulnerabilities 4

  • High 7.5
    CVE-2026-3039

    BIND 9 server memory exhaustion during GSS-API TKEY negotiation

    BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integr…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine
  • High 7.5
    CVE-2026-5946

    Invalid handling of CLASS != IN

    Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafte…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine
  • Medium 5.3
    CVE-2026-3592

    Amplification vulnerabilities via self-pointed glue records

    BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine
  • Medium 5.3
    CVE-2026-5950 Public exploit

    Unbounded resend loop in BIND 9 resolver

    An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions. This issue…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine

References

  • article
    https://images.redhat.com/
  • report
    https://access.redhat.com/security/cve/CVE-2026-3039
  • article
    https://access.redhat.com/security/updates/classification/
  • report
    https://access.redhat.com/security/cve/CVE-2026-5946
  • report
    https://access.redhat.com/security/cve/CVE-2026-5950
  • report
    https://access.redhat.com/security/cve/CVE-2026-3592
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_20334.json
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2479767
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-3039
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-3039
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2479768
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-3592
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-3592
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2479771
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-5946
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-5946
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2479773
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-5950
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-5950