{"id":"CVE-2021-31870","details":"An issue was discovered in klibc before 2.0.9. Multiplication in the calloc() function may result in an integer overflow and a subsequent heap buffer overflow.","modified":"2026-03-15T22:40:36.974281Z","published":"2021-04-30T06:15:07.190Z","references":[{"type":"ADVISORY","url":"https://kernel.org/pub/linux/libs/klibc/2.0/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html"},{"type":"ADVISORY","url":"https://lists.zytor.com/archives/klibc/2021-April/004593.html"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/04/30/1"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=292650f04c2b5348b4efbad61fb014ed09b4f3f2"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31870.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"2.0.9"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}