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libtirpc — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-85231

A flaw was found in libtirpc. An authenticated remote attacker could exploit this vulnerability by sending oversized wrapped data requests to an RPC (Remote Procedure Call) service configured with RPCSEC_GSS (Remote Procedure Call Security-Generic Security Service) integrity or privacy. This can lead to unbounded memory allocation, resulting in a Denial of Service (DoS) by exhausting system resources and causing the service to become unstable or terminate.

Products
libtirpc
Affected versions
1.3.3+ds-1, 1.3.4+ds-1, 1.3.4+ds-1.1, 1.3.4+ds-1.1~exp1, 1.3.4+ds-1.1~exp2, 1.3.4+ds-1.2, 1.3.4+ds-1.3, 1.3.6+ds-1, 1.3.7+ds-1, 1.3.7-0.1
Fixed versions
Not specified
CVEs
CVE-2026-85231
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 00:01 UTC · Revision 1

Source evidence

DEBIAN-CVE-2026-85231

core-osv · Original source

Published 16 Oct 2026, 19:17 UTC

A flaw was found in libtirpc. An authenticated remote attacker could exploit this vulnerability by sending oversized wrapped data requests to an RPC (Remote Procedure Call) service configured with RPCSEC_GSS (Remote Procedure Call Security-Generic Security Service) integrity or privacy. This can lead to unbounded memory allocation, resulting in a Denial of Service (DoS) by exhausting system resources and causing the service to become unstable or terminate.

osv:DEBIAN-CVE-2026-85231

libtirpc

Fixed versions: Not specified

libtirpc

Fixed versions: Not specified

libtirpc

Fixed versions: Not specified

Complete source record
{
  "id": "006f875966fa26876cf7a472341c630fd1f1e8b81e1e78fd9503befb46ec772b",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-85231",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-85231",
    "summary": "A flaw was found in libtirpc. An authenticated remote attacker could exploit this vulnerability by sending oversized wrapped data requests to an RPC (Remote Procedure Call) service configured with RPCSEC_GSS (Remote Procedure Call Security-Generic Security Service) integrity or privacy. This can lead to unbounded memory allocation, resulting in a Denial of Service (DoS) by exhausting system resources and causing the service to become unstable or terminate.",
    "evidence": "osv:DEBIAN-CVE-2026-85231",
    "products": [
      {
        "name": {
          "value": "libtirpc",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.3.3+ds-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.4+ds-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.4+ds-1.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.4+ds-1.1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.4+ds-1.1~exp2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.4+ds-1.2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.4+ds-1.3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.6+ds-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.7+ds-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.7-0.1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libtirpc",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.3.6+ds-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.3.7+ds-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.3.7-0.1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libtirpc",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.3.6+ds-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.3.7+ds-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.3.7-0.1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2026-85231",
      "aliases": [
        "DEBIAN-CVE-2026-85231"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "libtirpc",
            "purl": "pkg:deb/debian/libtirpc?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "1.3.3+ds-1",
            "1.3.4+ds-1",
            "1.3.4+ds-1.1",
            "1.3.4+ds-1.1~exp1",
            "1.3.4+ds-1.1~exp2",
            "1.3.4+ds-1.2",
            "1.3.4+ds-1.3",
            "1.3.6+ds-1",
            "1.3.7+ds-1",
            "1.3.7-0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-85231.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "libtirpc",
            "purl": "pkg:deb/debian/libtirpc?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "1.3.6+ds-1",
            "1.3.7+ds-1",
            "1.3.7-0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-85231.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "libtirpc",
            "purl": "pkg:deb/debian/libtirpc?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "1.3.6+ds-1",
            "1.3.7+ds-1",
            "1.3.7-0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-85231.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-17T10:00:07.489815057Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-85231"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-85231"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-85231",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 352298,
  "published_at": "2026-10-16T19:17:44.18+00:00"
}