{"cve":"CVE-2021-41864","nvd":{"published":"2021-10-02T00:15:07.503","modified":"2026-08-05T18:44:49.827","status":"Analyzed","description":"prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-190"],"references":["https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12","https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=30e29a9a2bc6a4888335a6ede968b75cd329657a","https://github.com/torvalds/linux/commit/30e29a9a2bc6a4888335a6ede968b75cd329657a","https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html","https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html"],"products":["debian:debian_linux","fedoraproject:fedora","linux:linux_kernel","netapp:cloud_backup","netapp:h300e_firmware","netapp:h300s_firmware","netapp:h410c_firmware","netapp:h410s_firmware","netapp:h500e_firmware","netapp:h500s_firmware","netapp:h700e_firmware","netapp:h700s_firmware","netapp:hci_management_node","netapp:solidfire","netapp:solidfire_baseboard_management_controller_firmware"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-41864","score":0.00412,"percentile":0.35502,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}