{"id":"CVE-2026-85231","aliases":["BELL-CVE-2026-85231","DEBIAN-CVE-2026-85231","EUVD-2026-103019","GHSA-xhf3-w45r-cmh3","UBUNTU-CVE-2026-85231","openSUSE-SU-2026:12244-1"],"status":"published","title":"Libtirpc: libtirpc: denial of service via unbounded memory allocation during rpcsec_gss decoding","description":"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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00297,"percentile":0.22525,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-770"],"published":"2026-10-16T18:20:40Z","modified":"2026-11-06T07:45:27Z","affected":[{"source":"osv","ecosystem":"Alpaquita:23","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.3-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:25","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.5-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.3-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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"]},{"source":"osv","ecosystem":"Debian:13","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.6+ds-1","1.3.7+ds-1","1.3.7-0.1"]},{"source":"osv","ecosystem":"Debian:14","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.6+ds-1","1.3.7+ds-1","1.3.7-0.1"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.2-5ubuntu1","0.2.2-5ubuntu2","0.2.2-5ubuntu2.1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.5-1","0.2.5-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ntirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.1-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2.5-1.2","0.2.5-1.2ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ntirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.4-1","1.5.3-1","1.6.1-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.4-0.4","1.1.4-1","1.2.5-1","1.2.5-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ntirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.4-2","3.0-0ubuntu1","3.0-0ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-2","1.3.2-2build1","1.3.2-2ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"ntirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4-2build1","3.4-2build2","3.5-1","3.5-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.3+ds-1","1.3.4+ds-1","1.3.4+ds-1build1","1.3.4+ds-1.1","1.3.4+ds-1.1build1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"ntirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3-2","4.3-3","4.3-3.1","4.3-3.1build1","4.3-3.1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.7-0.1","1.3.7+ds-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"ntirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.3-4","7.2-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.6+ds-1","1.3.6+ds-1ubuntu1","1.3.7-0.1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"ntirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.3-2","6.3-3","6.3-4"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"libtirpc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.8-1.1"}]}],"bundled":2}],"products":[{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"},{"vendor":"red hat","product":"red hat hardened images"},{"vendor":"red hat","product":"red hat openshift ai (rhoai)"},{"vendor":"red hat","product":"red hat openshift container platform 4"},{"vendor":"red hat","product":"red hat openshift container platform 5"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-85231","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2478512","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85231"},{"url":"https://github.com/advisories/GHSA-xhf3-w45r-cmh3"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-85231","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-85231","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-85231","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-85231","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-85231","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-85977","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-85231","title":"Libtirpc: libtirpc: denial of service via unbounded memory allocation during rpcsec_gss decoding","description":"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.","status":"published","published":"2026-10-16T18:20:40.761Z","modified":"2026-11-06T07:45:27.234Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-06T08:57:32.08691Z"}],"euvd":[{"id":"EUVD-2026-103019","description":"A flaw was found in libtirpc. 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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. 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