RHSA-2026:80360MediumCVSS 5.3

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

Published
October 11, 2026
Last Modified
October 17, 2026

🔗 CVE IDs covered (1)

CVE-2026-85977 →

📋 Description

CVE-2026-85977 — libtirpc: libtirpc: Denial of Service via unbounded memory allocation during portmapper response decoding

🎯 Affected products8

  • Red Hat Hardened Images
  • libtirpc-0:1.3.8-0.1.hum1@aarch64 as a component of Red Hat Hardened Images
  • libtirpc-0:1.3.8-0.1.hum1@s390x as a component of Red Hat Hardened Images
  • libtirpc-0:1.3.8-0.1.hum1@src as a component of Red Hat Hardened Images
  • libtirpc-0:1.3.8-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
  • libtirpc-devel-0:1.3.8-0.1.hum1@aarch64 as a component of Red Hat Hardened Images
  • libtirpc-devel-0:1.3.8-0.1.hum1@s390x as a component of Red Hat Hardened Images
  • libtirpc-devel-0:1.3.8-0.1.hum1@x86_64 as a component of Red Hat Hardened Images

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Workaround: To mitigate this issue, avoid configuring applications that use `pmap_getmaps()` to query untrusted or attacker-controlled portmapper services. If such functionality is essential, restrict network access for services utilizing `pmap_getmaps()` to only trusted hosts via firewall rules. Additionally, consider isolating client applications that call `pmap_getmaps()` into constrained environments to limit the impact of potential resource exhaustion.

🔗 References (5)