{"id":"ALPINE-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":"2026-11-03T06:32:40.469146411Z","published":"2021-04-30T06:15:07.190Z","upstream":["CVE-2021-31870"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-31870"}],"affected":[{"package":{"name":"klibc","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/klibc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.9-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-31870.json"}},{"package":{"name":"klibc","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/klibc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.9-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-31870.json"}},{"package":{"name":"klibc","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/klibc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.9-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-31870.json"}},{"package":{"name":"klibc","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/klibc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.9-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-31870.json"}},{"package":{"name":"klibc","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/klibc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.9-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-31870.json"}},{"package":{"name":"klibc","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/klibc?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.9-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-31870.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}