CVE-2026-85977
Fixed in a distro release EPSS <1%CVSS 5.3
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.
Products: Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | libtirpc | no fix |
| Debian 13 | libtirpc | no fix |
| Debian 14 | libtirpc | no fix |
| Red Hat hummingbird 1 | libtirpc | 0:1.3.8-0.1.hum1 |
| Red Hat hummingbird 1 | libtirpc-devel | 0:1.3.8-0.1.hum1 |
| Ubuntu 14.04 LTS | libtirpc | no fix |
| Ubuntu 16.04 LTS | libtirpc | no fix |
| Ubuntu 16.04 LTS | ntirpc | no fix |
| Ubuntu 18.04 LTS | libtirpc | no fix |
| Ubuntu 18.04 LTS | ntirpc | no fix |
| Ubuntu 20.04 LTS | libtirpc | no fix |
| Ubuntu 20.04 LTS | ntirpc | no fix |
| Ubuntu 22.04 LTS | libtirpc | no fix |
| Ubuntu 22.04 LTS | ntirpc | no fix |
| Ubuntu 24.04 LTS | libtirpc | no fix |
| Ubuntu 24.04 LTS | ntirpc | no fix |
| Ubuntu 26.04 LTS | libtirpc | no fix |
| Ubuntu 26.04 LTS | ntirpc | no fix |
| Ubuntu 26.10 | libtirpc | no fix |
| Ubuntu 26.10 | ntirpc | no fix |
| openSUSE Tumbleweed | libtirpc | 1.3.8-1.1 |