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High RHSA-2026:8753 1 CVE

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

Published Apr 21, 2026 · Updated Oct 6, 2026

Ecosystem: Red Hat

Fixed packages 6

ReleasePackageFixed in
Red Hat · Hardened Images 1 hummingbird:1 valkey 0:9.0.3-1.2.hum1
Red Hat · Hardened Images 1 hummingbird:1 valkey-compat-redis 0:9.0.3-1.2.hum1
Red Hat · Hardened Images 1 hummingbird:1 valkey-compat-redis-devel 0:9.0.3-1.2.hum1
Red Hat · Hardened Images 1 hummingbird:1 valkey-devel 0:9.0.3-1.2.hum1
Red Hat · Hardened Images 1 hummingbird:1 valkey-doc 0:9.0.3-1.2.hum1
Red Hat · Hardened Images 1 hummingbird:1 valkey-rdma 0:9.0.3-1.2.hum1

Vulnerabilities 1

  • High 7.5
    CVE-2026-21863

    Malformed Valkey Cluster bus message can lead to Remote DoS

    Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a malicious actor with access to the Valkey clusterbus port can send an invalid packet that may cause an out bound read, which might result in the system crashing. …

    valkey-io valkey redis valkey Debian Ubuntu Azure Linux Alpine

References

  • article
    https://images.redhat.com/
  • report
    https://access.redhat.com/security/cve/CVE-2026-21863
  • article
    https://access.redhat.com/security/updates/classification/
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_8753.json
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2442026
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-21863
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-21863
  • article
    https://github.com/valkey-io/valkey/security/advisories/GHSA-c677-q3wr-gggq