Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-85977
Red Hat Red Hat Hardened Images — Libtirpc: libtirpc: denial of service via unbounded memory allocation during portmapper response decoding
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H N R U N N H 5.3 .0028 19.2 —
AFFECTED
Product Versions Fixed
Red Hat Hardened Images unspecified 1.3.8-0.1.hum1
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
TIMELINE
Sep 4 Reserved by redhat
Oct 16 Published (CNA: redhat)
Oct 17 PATCH SHIPPED — CVE-2026-85977 (Red Hat Hardened Images). Fixed in Red Hat Hardened Images 1.3.8-0.1.hum1.
Description
A flaw was found in libtirpc. A remote attacker can exploit this vulnerability by sending specially crafted PMAPPROC_DUMP replies to a client application that uses the pmap_getmaps() function against an attacker-controlled host. This unbounded decoding can lead to excessive memory and CPU allocation, causing the client process to experience a Denial of Service (DoS) due to resource exhaustion.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 4, 2026 | Reserved | Reserved by redhat |
| October 16, 2026 | Published | Published (CNA: redhat) |
| October 17, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-85977 (Red Hat Hardened Images). Fixed in Red Hat Hardened Images 1.3.8-0.1.hum1. |
Affected
Affected products and packages — 8 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Hardened Images | — | — | 1.3.8-0.1.hum1 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-85977 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
