{"id":"UBUNTU-CVE-2020-28975","details":"** DISPUTED ** svm_predict_values in svm.cpp in Libsvm v324, as used in scikit-learn 0.23.2 and other products, allows attackers to cause a denial of service (segmentation fault) via a crafted model SVM (introduced via pickle, json, or any other model permanence standard) with a large value in the _n_support array. NOTE: the scikit-learn vendor's position is that the behavior can only occur if the library's API is violated by an application that changes a private attribute.","modified":"2020-11-21T21:15:00Z","published":"2020-11-21T21:15:00Z","withdrawn":"2025-06-23T15:53:48Z","references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-28975"},{"type":"REPORT","url":"https://github.com/cjlin1/libsvm/blob/9a3a9708926dec87d382c43b203f2ca19c2d56a0/svm.cpp#L2501"},{"type":"REPORT","url":"https://github.com/scikit-learn/scikit-learn/issues/18891"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-28975"}],"affected":[{"package":{"name":"libsvm","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libsvm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.12-1","3.12-1.1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28975.json"}},{"package":{"name":"libsvm","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libsvm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.21+ds-1.1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28975.json"}},{"package":{"name":"libsvm","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libsvm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.21+ds-1.2","3.21+ds-1.2build1","3.24+ds-1","3.24+ds-2","3.24+ds-3","3.24+ds-3build1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28975.json"}},{"package":{"name":"libsvm","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libsvm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.24+ds-6"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28975.json"}},{"package":{"name":"libsvm","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libsvm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.24+ds-6","3.24+ds-6ubuntu2"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28975.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}