{"action":"Upgrade klibc to 2.0.8-6 or later.","affected":[{"fixed":"2.0.8-6","introduced":"0"}],"component":"klibc","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2.0.8-6"],"id":"tcs_01M5NFP0DJMHFCPB3XB3VVX0HE","modified_at":"2026-10-23T18:03:14.684520641Z","published_at":"2021-04-30T06:15:07.190Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-31870","https://security-tracker.debian.org/tracker/CVE-2021-31870"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-31870","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-31870"}],"summary":"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."}